18x18x1 Air Filter by GlasflossProduct Details Glasfloss Air Filters are an excellent choice for any air conditioning system and are the ones used by the professionals. They are manufactured right here in Florida, by Floridians. Each air filter uses filter media that is made from 100% synthetic material that will not support microbial growth and does not absorb moisture. The media is supported by a galvanized, expanded metal backing that resists rust and corrosion. The filter frame

13-1/2" x 19-1/2" x 7/8" (13

12" x 30" x 1"

FSM2X3000A

FSM4P3600A

Galvanized Expanded Metal Backing

20" x 22" x 1"

Fits GMU1625 filter cabinet

11-1/2" x 11-1/2" x 7/8" (11

20" x 20" x 2"

21-1/2" x 23-5/16" x 1"

(MERV 10: 9 PPF) (MERV 11: 11 PPF)

14" x 20" x 1"