Pro-source PRO21546 Pleated Air Filter 20x24x4 Merv 13

Product Description

The PRO-SOURCE PRO21546 is a MERV 13 pleated air filter rated for residential and light commercial HVAC applications where higher particulate capture is required. Built with a wire-backed synthetic media and a beverage board frame, this filter delivers 80 to 85 percent particle capture efficiency at a rated airflow of 1,650 CFM. Nominal dimensions are 20 x 24 x 4 inches with actual dimensions of 19-3/8 x 23-3/8 x 3-3/4 inches. The wire backing supports media integrity across the full service life, maintaining consistent pleat geometry under airflow. HVAC technicians and service contractors install this filter in forced-air systems where ASHRAE 52.2 performance documentation is required or preferred.

This filter is suited for forced-air heating and cooling systems in residential and commercial buildings where indoor air quality and filtration efficiency are priorities. The 4-inch depth provides greater media surface area than standard 1-inch or 2-inch filters, which supports longer service intervals and lower resistance buildup between changes. At an initial resistance of 0.34 inches water gauge at 500 feet per minute, the filter operates efficiently within typical residential and light commercial duct systems. It is compatible with any unit, making it a versatile stock option for service contractors who maintain mixed-equipment accounts. This filter also earns LEED points for applicable green building projects.

Key Features

• MERV 13 rating with 80 to 85 percent particle capture efficiency per ASHRAE 52.2
• Wire-backed pleated synthetic media maintains pleat structure throughout service life
• Beverage board frame provides rigid, moisture-resistant support
• 1,650 CFM rated airflow with initial resistance of 0.34 inches water gauge at 500 FPM
• 4-inch nominal depth for extended service intervals versus shallower filter formats
• Earns LEED points for qualifying green building projects
• Listed to UL 900 fire safety standard

Compatibility

Designed for use with any forced-air HVAC unit accepting a nominal 20 x 24 x 4-inch filter. No unit-specific restrictions are stated by the manufacturer.

Installation Notes

Installation should be performed by a qualified HVAC technician or knowledgeable service professional. Power down the air handler or furnace at the disconnect before replacing the filter. Verify the actual opening dimensions in the filter cabinet against the actual filter size of 19-3/8 x 23-3/8 x 3-3/4 inches before installation to ensure proper fit and prevent bypass. Maximum rated operating temperature is 150 degrees F; do not install in applications that exceed this limit.