Nordyne 918397 20x25x5 MERV 11 Air Filter - 3 Pack UV Lamps Filter Dimensions: 17-5/8" x 18-1/8" Standard Ductless Filters CAP1200UV CAP1200UVP ONLY Air Purifying Filters:Four (4) - Best Value! ABA-HC183699G

Filter Dimensions: 17-5/8" x 18-1/8"

The Nordyne 918394 can be used to replace collection cells in second generation ("flat top") electronic air cleaner that with their cells removed have a clear opening at least 15 3/8" x 21 7/8" x 5 1/4"

and pressure sensor calibration

it is easily peeled away to expose the next mat and discarded

Inlet/Outlet Connection 3/4"

Nordyne 918397 20x25x5 MERV 11 Air Filter 3 Pack UV Lamps Filter Dimensions: 17 5 8" x 18 1 8" Standard Ductless Filters CAP1200UV CAP1200UVP ONLY Air Purifying Filters:Four (4) Best Value! ABA HC183699G Filter Dimensions: 17 5 8" x 18 1 8" The Nordyne 918394 can be used to replace collection cells in second generation ("flat top") electronic air cleaner that with their cells removed have a clear opening at least 15 3 8" x 21 7 8" x 5 1 4"