Our 18x18x1 Are now MERV 10. Buy your air filters direct. We deal with manufactures, so you know your getting the best quality filter for your money. Our filters use a heavy duty beverage board frame to withstand heavy use without collapsing. Actual Size 17.5×17.5x.75. Case of 6

Glasfloss- 18x18x1 MERV 10 (6 Pack)
$54.00 $54.00 — available on subscription
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