Sterling Seal SSI5251004780XCS Purolator Key Pleat Extended Surface Air filter by Mechanical MERV 8, 20" W x 22" H x 1" D, Heavy Duty Beverage Board Frame, 100% Synthetic filter Media (Pack of 12)

DIRECT FROM THE MFG PUROLATOR; 1 MERV 8, MERV-A 8-A; 2 All performance data is based on the ASHRAE 522-2007 Test Standard Tested at 492 FPM for a 24x24x2 size filter; 3 Maximum final resistance 10" WG; 4 Filters may be installed with the pleats either vertical (preferred) or horizontal; Underwriters Laboratories, Inc Classification: Key Pleat filters are classified per UL 900 for flammability only; Operating Temperature Limits: Maximum operating temperature is 150°F (65°C)

• Mechanical MERV8 Filter. Air Flow Capacity listed at 300FPM
• Low initial resistance for energy savings, quality engineered, consistently produced, made of 100 percent synthetic fibers, made in the use for over 30 years
• Single piece beverage board die cut frame, with structural integrity unlike any self supported filter available today
• Pleats hold together even when wet! not delaminating, not excessive buckling, not collapsing. Filter can endure impact and deformation and return to its original shape
• Actual size: 19.75" width x 21.75" height x .75" thick, nominal size: 20" width x 22" height x 1" thick