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Ships within 48 hours · Estimated delivery Sep 20 - Sep 25
and waterproof housing
Where Used: Cobalt "BASIC"
Chill Water Loop Filtration
Safely removes mineral build-up
follow the instructions for flushing the cartridge to remove the fines before using the water
18x18x1 MERV 11 Pleated Air Filter 6PK - 17.75x17.75x.75 - Actual Size Carrier and waterproof housing18x18x1 MERV 11 Air Filter Box of 6 Actual Size of Filter: 17. 75x17. 75x. 75 Air filters are ranked in a minimum efficiency rating value (MERV) system. The higher the MERV rating, the better the filter can filter out all airborne particulates. Since we are constantly trying to improve indoor air quality, it only makes sense that we would offer air conditioner filter MERV 11. 18x18x1 MERV 11 filters are right on the cusp of being classified as medium
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