16" x 26" or 26" x 16" Cube Core Eggcrate Return Air Filter Grille for 1" Filter w30h30 This grill comes in four 4 X 12 Is CRFG2028 Width_14in
Yard notes & kiln story
Description
This grill comes in four different designs
Actual Filter Size – 31 3/4"w x 29 3/4" x 1"
And is classified as Class 1 Fire Proof - B1
actual front end outer dimensions are 26
4" X 12" Is The Size For The Duct Opening (floor/vent hole) Measurement Only
16" x 26" or 26" x 16" Cube Core Eggcrate Return Air Filter Grille for 1" Filter w30h30 This grill comes in four 4 X 12 Is CRFG2028 Width_14in This grill comes in four different designs Actual Filter Size – 31 3 4"w x 29 3 4" x 1"