

Ships same day if ordered by 12 pm
Manufacturer pricing rules prevent us from advertising our discount — no account or email required to see it.
Secure Payments
Easy Returns
Expert Advice
Fast Shipping
The GLASFLOSS GDS_20X20X1 is a disposable fiberglass panel air filter designed for forced-air HVAC systems in commercial, industrial, and residential applications. Measuring 20 inches by 20 inches by 1 inch with 2.77 square feet of media area, it handles airflow up to 300 feet per minute (FPM). The filter uses progressively dense fiberglass media thermally bonded to a heavy-duty one-piece craft-board frame. Initial resistance is 0.09 inches water column (WC) and final resistance is 0.5 inches WC. It is rated for temperatures up to 180 degrees F and carries Energy Star recognition. Licensed HVAC technicians and building maintenance professionals install this filter as a standard panel replacement in air handling units, rooftop units, and residential furnaces.
This filter suits a wide range of forced-air systems where a standard 20-by-20-by-1-inch panel filter is specified. The double-strut internal frame construction provides 10 percent greater open media area than traditional metal-grid filters, supporting strong dust-holding capacity without restricting airflow. The design eliminates sharp edges for safer handling during service calls and routine maintenance. It is appropriate for commercial air handlers, light industrial ventilation systems, and residential furnace or air handler filter racks. The one-piece craft-board frame simplifies disposal and reduces handling hazards compared to metal-frame alternatives.
Designed as an OEM-style replacement panel filter for forced-air HVAC systems requiring a 20-inch by 20-inch by 1-inch disposable fiberglass filter in commercial, industrial, or residential applications.
Installation is performed by licensed HVAC technicians or qualified building maintenance personnel. Always shut down the air handling unit or furnace and set the thermostat to off before removing or installing the filter. Confirm airflow direction arrows on the frame are aligned with the direction of airflow in the filter rack before securing the unit. Follow local mechanical codes and equipment manufacturer service intervals for replacement scheduling.
Thanks for subscribing!
This email has been registered!