Generalaire GF 4511 MERV 13 16x25x5 Furnace Filter for Mac 1400 Air Cleaners. Package of 3. Made by FurnaceFilters.Ca 18x20x2 Standard 20 x 30 x

Standard 20 x 30 x 2 MERV 8 Rated Pleated Filters

Actual Size 18 1/2" x 22" x 5/8"

metal frame base

Actual Size 17 3/4" x 23 3/8" x 3/4"

Replacement Filter Part # S1-AA413

Generalaire GF 4511 MERV 13 16x25x5 Furnace Filter for Mac 1400 Air Cleaners. Package of 3. Made by FurnaceFilters.Ca 18x20x2 Standard 20 x 30 xMERV 13 GeneralAire GF 4511 ReservePro 16 x 25 x 5 for MAC 1400 Air Cleaners This is an Aftermarket Generic Product Manufactured in Canada Actual Size 15 5 8" x 24 3 16" x 4 15 16" (with foam strips) Also Fits: Source 1 #S1 FM10162505, S1 MAC10162505 Trion Air Bear Supreme 1400, #255649 105, Skuttle DB0 0025 016, #448 1 Ultravation 90 006, #91 005 Package of 3