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21x21x1

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Original price was: $73.43.Current price is: $69.60.

The Glasfloss MERV 10 Z-Line 21x21x1 air filters excel at removing allergens and dust from the air, making your home’s air cleaner. We designed the sturdy frame using heavy-duty, moisture-resistant materials, including recycled content, to make it easy to install and remove from your HVAC system. The synthetic fibers in the filter media won’t support [...]

Ships in 1 Business Day

$128.56

The Glasfloss MERV 10 Z-Line 21x21x1 air filters excel at removing allergens and dust from the air, making your home’s air cleaner. We designed the sturdy frame using heavy-duty, moisture-resistant materials, including recycled content, to make it easy to install and remove from your HVAC system. The synthetic fibers in the filter media won’t support [...]

Ships in 1 Business Day

$132.65

Actual Size: 20-5/8 x 20-5/8 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 5-10 Business Days