{"product_id":"21x23x1-air-filter","title":"21x23x1 Aerostar Air Filter","description":"A 21x23x1 nominal opening is one of those odd sizes that retail stores don't stock, which is why most homeowners end up ordering direct. This Aerostar measures 20 7\/8\" x 22 7\/8\" x 3\/4\" actual, built to fit the nominal 21x23x1 grille without binding or air bypass. MERV 8 covers standard residential filtration: dust, lint, pollen. MERV 11 steps up for pet households or homes with mild allergy concerns. MERV 13 captures fine particulates including bacteria, virus carriers, and wildfire smoke - the grade to choose if anyone in the household has asthma or chronic respiratory health concerns. Pleated synthetic media with an electrostatic charge handles the filtration. The pleats give you several times the surface area of a flat fiberglass filter at the same nominal size, which extends the service life to a 60-to-90-day window under typical residential conditions. The electrostatic charge built into the synthetic fibers catches sub-micron particles that the physical weave alone would miss. Manufactured by Con-Air Industries in Orlando, Florida. The cardboard frame is reinforced to maintain shape under blower suction - one of the more common failure modes in cheaper filters is frame collapse, which allows unfiltered air to bypass the media entirely.","brand":"Aerostar","offers":[{"title":"MERV 8 \/ 6","offer_id":41902199013530,"sku":"P80S.012123-6","price":78.48,"currency_code":"USD","in_stock":true},{"title":"MERV 11 \/ 2","offer_id":41902198849690,"sku":"P15S.012123-2","price":44.5,"currency_code":"USD","in_stock":true},{"title":"MERV 13 \/ 2","offer_id":41902198882458,"sku":"P25S.012123-2","price":48.38,"currency_code":"USD","in_stock":true},{"title":"MERV 8 \/ 4","offer_id":41902198915226,"sku":"P80S.012123-4","price":55.2,"currency_code":"USD","in_stock":true},{"title":"MERV 11 \/ 4","offer_id":41902198947994,"sku":"P15S.012123-4","price":75.96,"currency_code":"USD","in_stock":true},{"title":"MERV 13 \/ 4","offer_id":41902198980762,"sku":"P25S.012123-4","price":89.99,"currency_code":"USD","in_stock":true},{"title":"MERV 8 \/ 2","offer_id":41902198816922,"sku":"P80S.012123-2","price":31.2,"currency_code":"USD","in_stock":true},{"title":"MERV 11 \/ 6","offer_id":41902199046298,"sku":"P15S.012123-6","price":108.84,"currency_code":"USD","in_stock":true},{"title":"MERV 13 \/ 6","offer_id":41902199079066,"sku":"P25S.012123-6","price":123.99,"currency_code":"USD","in_stock":true},{"title":"MERV 8 \/ 12","offer_id":41902199111834,"sku":"P80S.012123-12","price":144.0,"currency_code":"USD","in_stock":true},{"title":"MERV 11 \/ 12","offer_id":41902199144602,"sku":"P15S.012123-12","price":195.96,"currency_code":"USD","in_stock":true},{"title":"MERV 13 \/ 12","offer_id":41902199177370,"sku":"P25S.012123-12","price":230.4,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0591\/6937\/4362\/files\/21x23x1_MERV8_6pk.png?v=1787938837","url":"https:\/\/myairfiltersdeliveredeals.com\/products\/21x23x1-air-filter","provider":"Air Filters Delivered","version":"1.0","type":"link"}