Select Your Filter Size

20x25x4 Air Filters

20x25x4 Air Filters

Glasfloss Industries

20x25x4 Air Filter Glasfloss ZL Series MERV 10 - Single Filter

Glasfloss Z-Line 20x25x4 MERV 10 ZL furnace filters excel where similar HVAC filters (Heating, Ventilation & Air Conditioning) fall short while also offering an eco-friendly design. The air filter frame is constructed of heavy-duty, moisture...

$24.98

Add to Cart Compare Quick view
Glasfloss Industries

20x25x4 Air Filter Glasfloss ZL Series MERV 10 - Box of 2

Glasfloss Z-Line 20x25x4 MERV 10 ZL furnace filters excel where similar HVAC filters (Heating, Ventilation & Air Conditioning) fall short while also offering an eco-friendly design. The air filter frame is constructed of heavy-duty, moisture...

$44.12

Add to Cart Compare Quick view
Glasfloss Industries

20x25x4 Air Filter Glasfloss ZL Series MERV 10 - Box of 3

Glasfloss Z-Line 20x25x4 MERV 10 ZL furnace filters excel where similar HVAC filters (Heating, Ventilation & Air Conditioning) fall short while also offering an eco-friendly design. The air filter frame is constructed of heavy-duty, moisture...

$58.05

Add to Cart Compare Quick view
Glasfloss Industries

20x25x4 Air Filter Glasfloss ZL Series MERV 10 - Box of 6

Glasfloss Z-Line 20x25x4 MERV 10 ZL furnace filters excel where similar HVAC filters (Heating, Ventilation & Air Conditioning) fall short while also offering an eco-friendly design. The air filter frame is constructed of heavy-duty, moisture...

$102.62

Add to Cart Compare Quick view
Glasfloss Industries

20x25x4 Air Filter MERV 11 Glasfloss Z-Line - Box of 6

Glasfloss Z-Line MR-11 20x25x4 MERV 11 furnace filters are an inexpensive upgrade from standard pleated air filters and excel where similar HVAC filters (Heating, Ventilation & Air Conditioning) fall short. These MERV 11 air filters also offer an...

$135.29

Add to Cart Compare Quick view
Glasfloss Industries

20x25x4 Air Filter MERV 13 Glasfloss Z-Line - Box of 6

Glasfloss Z-Line MR-13 20x25x4 MERV 13 furnace filters are the ultimate upgrade from standard pleated air filters and excel where similar HVAC filters (Heating, Ventilation & Air Conditioning) fall short. These MERV 13 air filters also offer an...

$296.91

Add to Cart Compare Quick view
Glasfloss Industries

20x25x4 Air Filter with Odor Reduction MERV 8 - Glasfloss (Box of 6)

Cooking odors, odors from smoking and many other activities create offensive odors and are a problem in many homes. The 20x25x4 Glasfloss Z-Line Carbotron furnace filters are the answer to these along with many other odor issues associated with IAQ...

$349.15

Add to Cart Compare Quick view

Free Shipping on All Orders!