{"title":"Home page","description":null,"products":[{"product_id":"cornerstone-16x20x1-merv-8-hvac-air-filter","title":"Cornerstone 16x20x1 MERV 8 HVAC Air Filter","description":"\u003cp data-start=\"136\" data-end=\"453\"\u003e\u003cstrong data-start=\"136\" data-end=\"176\"\u003eCleaner Air Starts with Cornerstone.\u003c\/strong\u003e\u003cbr data-start=\"176\" data-end=\"179\"\u003eThe Cornerstone 16x20x1 MERV 8 air filter is built to improve your home's indoor air quality and protect your HVAC system. Its pleated design captures 90% of common airborne particles without restricting airflow, keeping your system running efficiently and your air cleaner.\u003c\/p\u003e\n\u003cp data-start=\"455\" data-end=\"847\"\u003e\u003cstrong data-start=\"455\" data-end=\"472\"\u003eKey Features:\u003c\/strong\u003e\u003cbr data-start=\"472\" data-end=\"475\"\u003e📏 Size: Nominal 16x20x1 (Actual 15.5\" x 19.5\" x 0.75\")\u003cbr data-start=\"530\" data-end=\"533\"\u003e💨 Filtration: MERV 8 — blocks dust, pollen, lint, mold spores, and pet dander\u003cbr data-start=\"611\" data-end=\"614\"\u003e🧰 Construction: Pleated media with wire backing for durability and airflow\u003cbr data-start=\"689\" data-end=\"692\"\u003e📦 Pack Sizes: Available in 1\u003cbr data-start=\"733\" data-end=\"736\"\u003e🚚 Fast Shipping: Most orders ship within 24 hours\u003cbr data-start=\"786\" data-end=\"789\" data-is-only-node=\"\"\u003e🔁 Optional Auto-Delivery: Stay stocked without the hassle\u003c\/p\u003e\n\u003cp data-start=\"849\" data-end=\"971\"\u003e\u003cstrong data-start=\"849\" data-end=\"880\"\u003eWhen Should You Replace It?\u003c\/strong\u003e\u003cbr data-start=\"880\" data-end=\"883\"\u003eChange every 90 days or more often if you have pets, allergies, or visible dust buildup.\u003c\/p\u003e\n\u003cp data-start=\"973\" data-end=\"1168\"\u003e\u003cstrong data-start=\"973\" data-end=\"995\"\u003eWhy Choose MERV 8?\u003c\/strong\u003e\u003cbr data-start=\"995\" data-end=\"998\"\u003eMERV 8 filters are perfect for everyday air quality protection. They effectively trap:\u003cbr data-start=\"1084\" data-end=\"1087\"\u003e• Dust and lint\u003cbr data-start=\"1102\" data-end=\"1105\"\u003e• Pet dander\u003cbr data-start=\"1117\" data-end=\"1120\"\u003e• Mold spores\u003cbr data-start=\"1133\" data-end=\"1136\"\u003e• Pollen\u003cbr data-start=\"1144\" data-end=\"1147\" data-is-only-node=\"\"\u003e• Household particles\u003c\/p\u003e\n\u003cp data-start=\"1170\" data-end=\"1221\"\u003e\u003cstrong data-start=\"1170\" data-end=\"1221\"\u003eStay efficient. Stay clean. Choose Cornerstone.\u003c\/strong\u003e\u003c\/p\u003e","brand":"Cornerstone Air Filters","offers":[{"title":"Default Title","offer_id":49346531262657,"sku":"","price":18.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0830\/1284\/5761\/files\/ChatGPTImageJun20_2025_09_41_08PM.png?v=1750470074"},{"product_id":"cornerstone-16x25x1-merv-8-hvac-air-filter-copy","title":"Cornerstone 16x25x1 MERV 8 HVAC Air Filter","description":"\u003cp data-end=\"391\" data-start=\"74\"\u003e\u003cstrong data-end=\"114\" data-start=\"74\"\u003eCleaner Air Starts with Cornerstone.\u003c\/strong\u003e\u003cbr data-end=\"117\" data-start=\"114\"\u003eThe Cornerstone 16x25x1 MERV 8 air filter is built to improve your home's indoor air quality and protect your HVAC system. Its pleated design captures 90% of common airborne particles without restricting airflow, keeping your system running efficiently and your air cleaner.\u003c\/p\u003e\n\u003cp data-end=\"785\" data-start=\"393\"\u003e\u003cstrong data-end=\"410\" data-start=\"393\"\u003eKey Features:\u003c\/strong\u003e\u003cbr data-end=\"413\" data-start=\"410\"\u003e📏 Size: Nominal 16x25x1 (Actual 15.5\" x 24.5\" x 0.75\")\u003cbr data-end=\"471\" data-start=\"468\"\u003e💨 Filtration: MERV 8 — blocks dust, pollen, lint, mold spores, and pet dander\u003cbr data-end=\"552\" data-start=\"549\"\u003e🧰 Construction: Pleated media with wire backing for durability and airflow\u003cbr data-end=\"630\" data-start=\"627\"\u003e📦 Pack Sizes: Available in 1\u003cbr data-end=\"674\" data-start=\"671\"\u003e🚚 Fast Shipping: Most orders ship within 24 hours\u003cbr data-end=\"727\" data-start=\"724\"\u003e🔁 Optional Auto-Delivery: Stay stocked without the hassle\u003c\/p\u003e\n\u003cp data-end=\"909\" data-start=\"787\"\u003e\u003cstrong data-end=\"818\" data-start=\"787\"\u003eWhen Should You Replace It?\u003c\/strong\u003e\u003cbr data-end=\"821\" data-start=\"818\"\u003eChange every 90 days or more often if you have pets, allergies, or visible dust buildup.\u003c\/p\u003e\n\u003cp data-end=\"1106\" data-start=\"911\"\u003e\u003cstrong data-end=\"933\" data-start=\"911\"\u003eWhy Choose MERV 8?\u003c\/strong\u003e\u003cbr data-end=\"936\" data-start=\"933\"\u003eMERV 8 filters are perfect for everyday air quality protection. They effectively trap:\u003cbr data-end=\"1025\" data-start=\"1022\"\u003e• Dust and lint\u003cbr data-end=\"1043\" data-start=\"1040\"\u003e• Pet dander\u003cbr data-end=\"1058\" data-start=\"1055\"\u003e• Mold spores\u003cbr data-end=\"1074\" data-start=\"1071\"\u003e• Pollen\u003cbr data-end=\"1085\" data-start=\"1082\"\u003e• Household particles\u003c\/p\u003e\n\u003cp data-is-only-node=\"\" data-is-last-node=\"\" data-end=\"1159\" data-start=\"1108\"\u003e\u003cstrong data-is-last-node=\"\" data-end=\"1159\" data-start=\"1108\"\u003eStay efficient. Stay clean. Choose Cornerstone.\u003c\/strong\u003e\u003c\/p\u003e","brand":"Cornerstone Air Filters","offers":[{"title":"Default Title","offer_id":49353916842177,"sku":null,"price":19.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0830\/1284\/5761\/files\/ChatGPTImageJun20_2025_09_44_56PM.png?v=1750470310"},{"product_id":"cornerstone-20x25x1-merv-8-hvac-air-filter-copy-1","title":"Cornerstone 20x25x1 MERV 8 HVAC Air Filter","description":"\u003cp data-start=\"0\" data-end=\"317\"\u003e\u003cstrong data-start=\"0\" data-end=\"40\"\u003eCleaner Air Starts with Cornerstone.\u003c\/strong\u003e\u003cbr data-start=\"40\" data-end=\"43\"\u003eThe Cornerstone 20x25x1 MERV 8 air filter is built to improve your home's indoor air quality and protect your HVAC system. Its pleated design captures 90% of common airborne particles without restricting airflow, keeping your system running efficiently and your air cleaner.\u003c\/p\u003e\n\u003cp data-start=\"319\" data-end=\"711\"\u003e\u003cstrong data-start=\"319\" data-end=\"336\"\u003eKey Features:\u003c\/strong\u003e\u003cbr data-start=\"336\" data-end=\"339\"\u003e📏 Size: Nominal 20x25x1 (Actual 19.5\" x 24.5\" x 0.75\")\u003cbr data-start=\"394\" data-end=\"397\"\u003e💨 Filtration: MERV 8 — blocks dust, pollen, lint, mold spores, and pet dander\u003cbr data-start=\"475\" data-end=\"478\"\u003e🧰 Construction: Pleated media with wire backing for durability and airflow\u003cbr data-start=\"553\" data-end=\"556\"\u003e📦 Pack Sizes: Available in 1\u003cbr data-start=\"597\" data-end=\"600\"\u003e🚚 Fast Shipping: Most orders ship within 24 hours\u003cbr data-start=\"650\" data-end=\"653\"\u003e🔁 Optional Auto-Delivery: Stay stocked without the hassle\u003c\/p\u003e\n\u003cp data-start=\"713\" data-end=\"835\"\u003e\u003cstrong data-start=\"713\" data-end=\"744\"\u003eWhen Should You Replace It?\u003c\/strong\u003e\u003cbr data-start=\"744\" data-end=\"747\"\u003eChange every 90 days or more often if you have pets, allergies, or visible dust buildup.\u003c\/p\u003e\n\u003cp data-start=\"837\" data-end=\"1032\"\u003e\u003cstrong data-start=\"837\" data-end=\"859\"\u003eWhy Choose MERV 8?\u003c\/strong\u003e\u003cbr data-start=\"859\" data-end=\"862\"\u003eMERV 8 filters are perfect for everyday air quality protection. They effectively trap:\u003cbr data-start=\"948\" data-end=\"951\"\u003e• Dust and lint\u003cbr data-start=\"966\" data-end=\"969\"\u003e• Pet dander\u003cbr data-start=\"981\" data-end=\"984\"\u003e• Mold spores\u003cbr data-start=\"997\" data-end=\"1000\"\u003e• Pollen\u003cbr data-start=\"1008\" data-end=\"1011\"\u003e• Household particles\u003c\/p\u003e\n\u003cp data-start=\"1034\" data-end=\"1085\" data-is-last-node=\"\" data-is-only-node=\"\"\u003e\u003cstrong data-start=\"1034\" data-end=\"1085\" data-is-last-node=\"\"\u003eStay efficient. Stay clean. Choose Cornerstone.\u003c\/strong\u003e\u003c\/p\u003e","brand":"Cornerstone Air Filters","offers":[{"title":"Default Title","offer_id":49353918185665,"sku":null,"price":25.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0830\/1284\/5761\/files\/3.png?v=1750469534"},{"product_id":"cornerstone-14x20x1-merv-8-hvac-air-filter","title":"Cornerstone 14x20x1 MERV 8 HVAC Air Filter","description":"\u003cp data-start=\"146\" data-end=\"463\"\u003e\u003cstrong data-start=\"146\" data-end=\"186\"\u003eCleaner Air Starts with Cornerstone.\u003c\/strong\u003e\u003cbr data-start=\"186\" data-end=\"189\"\u003eThe Cornerstone 14x20x1 MERV 8 air filter is built to improve your home's indoor air quality and protect your HVAC system. Its pleated design captures 90% of common airborne particles without restricting airflow, keeping your system running efficiently and your air cleaner.\u003c\/p\u003e\n\u003cp data-start=\"465\" data-end=\"857\"\u003e\u003cstrong data-start=\"465\" data-end=\"482\"\u003eKey Features:\u003c\/strong\u003e\u003cbr data-start=\"482\" data-end=\"485\"\u003e📏 Size: Nominal 14x20x1 (Actual 13.5\" x 19.5\" x 0.75\")\u003cbr data-start=\"540\" data-end=\"543\"\u003e💨 Filtration: MERV 8 — blocks dust, pollen, lint, mold spores, and pet dander\u003cbr data-start=\"621\" data-end=\"624\"\u003e🧰 Construction: Pleated media with wire backing for durability and airflow\u003cbr data-start=\"699\" data-end=\"702\"\u003e📦 Pack Sizes: Available in 1\u003cbr data-start=\"743\" data-end=\"746\"\u003e🚚 Fast Shipping: Most orders ship within 24 hours\u003cbr data-start=\"796\" data-end=\"799\"\u003e🔁 Optional Auto-Delivery: Stay stocked without the hassle\u003c\/p\u003e\n\u003cp data-start=\"859\" data-end=\"981\"\u003e\u003cstrong data-start=\"859\" data-end=\"890\"\u003eWhen Should You Replace It?\u003c\/strong\u003e\u003cbr data-start=\"890\" data-end=\"893\"\u003eChange every 90 days or more often if you have pets, allergies, or visible dust buildup.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong data-start=\"983\" data-end=\"1005\"\u003eWhy Choose MERV 8?\u003c\/strong\u003e\u003cbr data-start=\"1005\" data-end=\"1008\"\u003eMERV 8 filters are perfect for everyday air quality protection. They effectively trap:\u003cbr data-start=\"1094\" data-end=\"1097\"\u003e• Dust and lint\u003cbr data-start=\"1112\" data-end=\"1115\"\u003e• Pet dander\u003cbr data-start=\"1127\" data-end=\"1130\"\u003e• Mold spores\u003cbr data-start=\"1143\" data-end=\"1146\"\u003e• Pollen\u003cbr data-start=\"1154\" data-end=\"1157\"\u003e• Household particles\u003c\/p\u003e\n\u003cp data-start=\"1180\" data-end=\"1231\" data-is-last-node=\"\" data-is-only-node=\"\"\u003e\u003cstrong data-start=\"1180\" data-end=\"1231\" data-is-last-node=\"\"\u003eStay efficient. Stay clean. Choose Cornerstone.\u003c\/strong\u003e\u003c\/p\u003e","brand":"Cornerstone Air Filters","offers":[{"title":"Default Title","offer_id":49353936011457,"sku":null,"price":18.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0830\/1284\/5761\/files\/4_6542baec-dedb-406a-a057-fc517ec09c43.png?v=1750469602"},{"product_id":"cornerstone-18x30x1-merv-8-hvac-air-filter","title":"Cornerstone 18x30x1 MERV 8 HVAC Air Filter","description":"\u003cp data-start=\"118\" data-end=\"435\"\u003e\u003cstrong data-start=\"118\" data-end=\"158\"\u003eCleaner Air Starts with Cornerstone.\u003c\/strong\u003e\u003cbr data-start=\"158\" data-end=\"161\"\u003eThe Cornerstone 18x30x1 MERV 8 air filter is built to improve your home's indoor air quality and protect your HVAC system. Its pleated design captures 90% of common airborne particles without restricting airflow, keeping your system running efficiently and your air cleaner.\u003c\/p\u003e\n\u003cp data-start=\"437\" data-end=\"819\"\u003e\u003cstrong data-start=\"437\" data-end=\"454\"\u003eKey Features:\u003c\/strong\u003e\u003cbr data-start=\"454\" data-end=\"457\"\u003e📏 Size: Nominal 18x30x1 (Actual 17.5\" x 29.5\" x 0.75\")\u003cbr data-start=\"512\" data-end=\"515\"\u003e💨 Filtration: MERV 8 — blocks dust, pollen, lint, mold spores, and pet dander\u003cbr data-start=\"593\" data-end=\"596\"\u003e🧰 Construction: Pleated media with wire backing for durability and airflow\u003cbr data-start=\"671\" data-end=\"674\"\u003e📦 Pack Sizes: Available in 4\u003cbr data-start=\"703\" data-end=\"706\"\u003e🚚 Fast Shipping: Most orders ship within 24 hours\u003cbr data-start=\"756\" data-end=\"759\"\u003e🔁 Optional Auto-Delivery: Stay stocked without the hassle\u003c\/p\u003e\n\u003cp data-start=\"821\" data-end=\"943\"\u003e\u003cstrong data-start=\"821\" data-end=\"852\"\u003eWhen Should You Replace It?\u003c\/strong\u003e\u003cbr data-start=\"852\" data-end=\"855\"\u003eChange every 90 days or more often if you have pets, allergies, or visible dust buildup.\u003c\/p\u003e\n\u003cp data-start=\"945\" data-end=\"1142\"\u003e\u003cstrong data-start=\"945\" data-end=\"967\"\u003eWhy Choose MERV 8?\u003c\/strong\u003e\u003cbr data-start=\"967\" data-end=\"970\"\u003eMERV 8 filters are perfect for everyday air quality protection. They effectively trap:\u003cbr data-start=\"1056\" data-end=\"1059\"\u003e• Dust and lint\u003cbr data-start=\"1074\" data-end=\"1077\"\u003e• Pet dander\u003cbr data-start=\"1089\" data-end=\"1092\"\u003e• Mold spores\u003cbr data-start=\"1105\" data-end=\"1108\"\u003e• Pollen\u003cbr data-start=\"1116\" data-end=\"1119\"\u003e• Household particles\u003c\/p\u003e\n\u003cp data-start=\"1144\" data-end=\"1195\" data-is-last-node=\"\" data-is-only-node=\"\"\u003e\u003cstrong data-start=\"1144\" data-end=\"1195\" data-is-last-node=\"\"\u003eStay efficient. Stay clean. Choose Cornerstone.\u003c\/strong\u003e\u003c\/p\u003e","brand":"Cornerstone Air Filters","offers":[{"title":"Default Title","offer_id":49353938403521,"sku":null,"price":42.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0830\/1284\/5761\/files\/5_b30a7529-d726-492c-914f-183506d22096.png?v=1750469630"},{"product_id":"cornerstone-20x30x1-merv-8-hvac-air-filter","title":"Cornerstone 20x30x1 MERV 8 HVAC Air Filter","description":"\u003cp data-start=\"85\" data-end=\"400\"\u003e\u003cstrong data-start=\"85\" data-end=\"125\"\u003eCleaner Air Starts with Cornerstone.\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp data-start=\"85\" data-end=\"400\"\u003eThe Cornerstone 20x30x1 MERV 8 air filter is built to improve your home's indoor air quality and protect your HVAC system. Its pleated design captures 90% of common airborne particles without restricting airflow, keeping your system running efficiently and your air cleaner.\u003c\/p\u003e\n\u003cp data-start=\"402\" data-end=\"782\"\u003e\u003cstrong data-start=\"402\" data-end=\"419\"\u003eKey Features:\u003c\/strong\u003e\u003cbr data-start=\"419\" data-end=\"422\"\u003e📏 Size: Nominal 20x30x1 (Actual 19.5\" x 29.5\" x 0.75\")\u003cbr data-start=\"477\" data-end=\"480\"\u003e💨 Filtration: MERV 8 — blocks dust, pollen, lint, mold spores, and pet dander\u003cbr data-start=\"558\" data-end=\"561\"\u003e🧰 Construction: Pleated media with wire backing for durability and airflow\u003cbr data-start=\"636\" data-end=\"639\"\u003e📦 Pack Sizes: Available in 4\u003cbr data-start=\"668\" data-end=\"671\"\u003e🚚 Fast Shipping: Most orders ship within 24 hours\u003cbr data-start=\"721\" data-end=\"724\"\u003e🔁 Optional Auto-Delivery: Stay stocked without the hassle\u003c\/p\u003e\n\u003cp data-start=\"784\" data-end=\"904\"\u003e\u003cstrong data-start=\"784\" data-end=\"815\"\u003eWhen Should You Replace It?\u003c\/strong\u003e Change every 90 days or more often if you have pets, allergies, or visible dust buildup.\u003c\/p\u003e\n\u003cp data-start=\"906\" data-end=\"1087\"\u003e\u003cstrong data-start=\"906\" data-end=\"928\"\u003eWhy Choose MERV 8?\u003c\/strong\u003e MERV 8 filters are perfect for everyday air quality protection. They effectively trap dust and lint, pet dander, mold spores, pollen, and household particles.\u003c\/p\u003e\n\u003cp data-start=\"1089\" data-end=\"1140\" data-is-last-node=\"\" data-is-only-node=\"\"\u003e\u003cstrong data-start=\"1089\" data-end=\"1140\" data-is-last-node=\"\"\u003eStay efficient. Stay clean. Choose Cornerstone.\u003c\/strong\u003e\u003c\/p\u003e","brand":"Cornerstone Air Filters","offers":[{"title":"Default Title","offer_id":49354031825089,"sku":null,"price":37.5,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0830\/1284\/5761\/files\/6_ed30afcc-1bf1-4aea-a458-3e52fc684d83.png?v=1750469857"},{"product_id":"cornerstone-24x24x1-merv-8-hvac-air-filter","title":"Cornerstone 24x24x1 MERV 8 HVAC Air Filter","description":"\u003cp data-start=\"99\" data-end=\"139\"\u003e\u003cstrong data-start=\"99\" data-end=\"139\"\u003eCleaner Air Starts with Cornerstone.\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp data-start=\"141\" data-end=\"415\"\u003eThe Cornerstone 24x24x1 MERV 8 air filter is built to improve your home's indoor air quality and protect your HVAC system. Its pleated design captures 90% of common airborne particles without restricting airflow, keeping your system running efficiently and your air cleaner.\u003c\/p\u003e\n\u003cp data-start=\"417\" data-end=\"799\"\u003e\u003cstrong data-start=\"417\" data-end=\"434\"\u003eKey Features:\u003c\/strong\u003e\u003cbr data-start=\"434\" data-end=\"437\"\u003e📏 Size: Nominal 24x24x1 (Actual 23.5\" x 23.5\" x 0.75\")\u003cbr data-start=\"492\" data-end=\"495\"\u003e💨 Filtration: MERV 8 — blocks dust, pollen, lint, mold spores, and pet dander\u003cbr data-start=\"573\" data-end=\"576\"\u003e🧰 Construction: Pleated media with wire backing for durability and airflow\u003cbr data-start=\"651\" data-end=\"654\"\u003e📦 Pack Sizes: Available in 4\u003cbr data-start=\"683\" data-end=\"686\"\u003e🚚 Fast Shipping: Most orders ship within 24 hours\u003cbr data-start=\"736\" data-end=\"739\"\u003e🔁 Optional Auto-Delivery: Stay stocked without the hassle\u003c\/p\u003e\n\u003cp data-start=\"801\" data-end=\"923\"\u003e\u003cstrong data-start=\"801\" data-end=\"832\"\u003eWhen Should You Replace It?\u003c\/strong\u003e\u003cbr data-start=\"832\" data-end=\"835\"\u003eChange every 90 days or more often if you have pets, allergies, or visible dust buildup.\u003c\/p\u003e\n\u003cp data-start=\"925\" data-end=\"1108\"\u003e\u003cstrong data-start=\"925\" data-end=\"947\"\u003eWhy Choose MERV 8?\u003c\/strong\u003e\u003cbr data-start=\"947\" data-end=\"950\"\u003eMERV 8 filters are perfect for everyday air quality protection. They effectively trap dust and lint, pet dander, mold spores, pollen, and household particles.\u003c\/p\u003e\n\u003cp data-start=\"1110\" data-end=\"1161\" data-is-last-node=\"\" data-is-only-node=\"\"\u003e\u003cstrong data-start=\"1110\" data-end=\"1161\" data-is-last-node=\"\"\u003eStay efficient. Stay clean. Choose Cornerstone.\u003c\/strong\u003e\u003c\/p\u003e","brand":"Cornerstone Air Filters","offers":[{"title":"Default Title","offer_id":49354048340161,"sku":null,"price":35.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0830\/1284\/5761\/files\/7_d10e8fb8-2409-4db7-8bcd-dee34c7c746d.png?v=1750469893"},{"product_id":"cornerstone-30x30x1-merv-8-hvac-air-filter-copy","title":"Cornerstone 30x30x1 MERV 8 HVAC Air Filter","description":"\u003cp data-start=\"122\" data-end=\"162\"\u003e\u003cstrong data-start=\"122\" data-end=\"162\"\u003eCleaner Air Starts with Cornerstone.\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp data-start=\"164\" data-end=\"438\"\u003eThe Cornerstone 30x30x1 MERV 8 air filter is built to improve your home's indoor air quality and protect your HVAC system. Its pleated design captures 90% of common airborne particles without restricting airflow, keeping your system running efficiently and your air cleaner.\u003c\/p\u003e\n\u003cp data-start=\"440\" data-end=\"820\"\u003e\u003cstrong data-start=\"440\" data-end=\"457\"\u003eKey Features:\u003c\/strong\u003e\u003cbr data-start=\"457\" data-end=\"460\"\u003e📏 Size: Nominal 30x30x1 (Actual 29.5\" x 29.5\" x 0.75\")\u003cbr data-start=\"515\" data-end=\"518\"\u003e💨 Filtration: MERV 8 — blocks dust, pollen, lint, mold spores, and pet dander\u003cbr data-start=\"596\" data-end=\"599\"\u003e🧰 Construction: Pleated media with wire backing for durability and airflow\u003cbr data-start=\"674\" data-end=\"677\"\u003e📦 Pack Sizes: Available in 4\u003cbr data-start=\"706\" data-end=\"709\"\u003e🚚 Fast Shipping: Most orders ship within 24 hours\u003cbr data-start=\"759\" data-end=\"762\"\u003e🔁 Optional Auto-Delivery: Stay stocked without the hassle\u003c\/p\u003e\n\u003cp data-start=\"822\" data-end=\"944\"\u003e\u003cstrong data-start=\"822\" data-end=\"853\"\u003eWhen Should You Replace It?\u003c\/strong\u003e\u003cbr data-start=\"853\" data-end=\"856\"\u003eChange every 90 days or more often if you have pets, allergies, or visible dust buildup.\u003c\/p\u003e\n\u003cp data-start=\"946\" data-end=\"1129\"\u003e\u003cstrong data-start=\"946\" data-end=\"968\"\u003eWhy Choose MERV 8?\u003c\/strong\u003e\u003cbr data-start=\"968\" data-end=\"971\"\u003eMERV 8 filters are perfect for everyday air quality protection. They effectively trap dust and lint, pet dander, mold spores, pollen, and household particles.\u003c\/p\u003e\n\u003cp data-start=\"1131\" data-end=\"1183\"\u003e\u003cstrong data-start=\"1131\" data-end=\"1182\"\u003eStay efficient. Stay clean. Choose Cornerstone.\u003c\/strong\u003e\u003c\/p\u003e","brand":"Cornerstone Air Filters","offers":[{"title":"Default Title","offer_id":49354102341825,"sku":null,"price":85.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0830\/1284\/5761\/files\/8.png?v=1750469703"}],"url":"https:\/\/cornerstonehvacsupply.com\/collections\/frontpage.oembed","provider":"Cornerstone Air Filters","version":"1.0","type":"link"}