28" X 18" Steel Return Air Filter Grille for 1" Filter - Removable Frame - [Outer Dimensions: 30 5/8" X 20 5/8"] 18" Round Duct Pipe Actual Filter Size – 33 Compatible With Duct 7in Applications This sheet metal DDAG-A-1212
Yard notes & kiln story
Description
Actual Filter Size – 33 3/4"w x 23 3/4" x 1"
Pack of 4 Pieces
Horizontal performance assures confident use of cooling temperature differential of 30 degrees Fahrenheit and greater
actual front end outer dimensions are approximately 12 5/8" width X 14 5/8" height
Actual Filter Size – 7 3/4"w x 9 3/4" x 1"
28" X 18" Steel Return Air Filter Grille for 1" Filter Removable Frame [Outer Dimensions: 30 5 8" X 20 5 8"] 18" Round Duct Pipe Actual Filter Size – 33 Compatible With Duct 7in Applications This sheet metal DDAG A 1212 Actual Filter Size – 33 3 4"w x 23 3 4" x 1" Pack of 4 Pieces