Generalaire GF 4511 MERV 13 16x25x5 Furnace Filter for Mac 1400 Air Cleaners. Package of 3. Made by FurnaceFilters.Ca 18x20x2 Actual Size 18 1/2" x

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

trying to remove the bulb by sliding up or down through the cardboard frame will break the bulb

Generalaire / ReservePro Part # GFI 4501 MERV 10 Replaced with GF4551 MERV 11

For Air Cleaner Models S1-M13PAC2025

Generalaire GF 4511 MERV 13 16x25x5 Furnace Filter for Mac 1400 Air Cleaners. Package of 3. Made by FurnaceFilters.Ca 18x20x2 Actual Size 18 1/2" 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