Air Filter, 18x20x1 Key Pleat - MERV 8 (6 Pack), Purolator, Mfr#: 18x20x1x1 KP (6 Pack)

The Purolator Key Pleat Air Filter is a standard capacity pleated filter. A seven-strap die cut is located on the air-leaving side of the Key Pleat MERV 8 providing additional strength and durability to each filter. The inside of the die cut frame is coated with adhesive to ensure a solid bond at all points of contact with the media pack. The pack is sealed inside the frame and pleat tips are bonded to the stabilizers and diagonal support members.