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18x20x1

Sale!
Original price was: $40.85.Current price is: $38.87.

Actual Size: 17-5/8 x 19-5/8 x 3/4. Glasfloss GDS Series air filters have a heavy-duty craft board frame with fiberglass media. The double strut design supports the media providing 10% greater open area. Change every 30 days for best results.

Ships in 1 Business Day

Sale!
Original price was: $64.91.Current price is: $59.20.

Actual Size: 17-5/8 x 19-5/8 x 3/4. Glasfloss GDS Series air filters have a heavy-duty craft board frame with fiberglass media. The double strut design supports the media providing 10% greater open area. Change every 30 days for best results.

Ships in 1 Business Day

Sale!
Original price was: $51.41.Current price is: $50.27.

Actual Size: 17-1/2 x 19-1/2 x 7/8. Glasfloss ZL Series MERV 10 air filters are constructed with a sturdy, moisture resistant frame and synthetic media that will not support microbial growth. Change every 30-90 days for best filtration results.

Ships in 1 Business Day

$87.90

Actual Size: 17-1/2 x 19-1/2 x 7/8. Glasfloss ZL Series MERV 10 air filters are constructed with a sturdy, moisture resistant frame and synthetic media that will not support microbial growth. Change every 30-90 days for best filtration results.

Ships in 1 Business Day

Sale!
Original price was: $133.70.Current price is: $123.73.

Actual Size: 17-1/2 x 19-1/2 x 7/8. Glasfloss ZL Series MERV 11 air filters are constructed with a sturdy, moisture resistant frame and synthetic media that will not support microbial growth. Change every 30-90 days for best filtration results.

Ships in 5-10 Business Days

$240.13

Actual Size: 17-1/2 x 19-1/2 x 7/8. Glasfloss ZL Series MERV 13 air filters are constructed with a sturdy, moisture resistant frame and synthetic media that will not support microbial growth. Change every 30-90 days for best filtration results.

Ships in 5-10 Business Days