20" X 14" Steel Return Air Filter Grille for 1" Filter - Removable Frame - [Outer Dimensions: 22 5/8" X 16 5/8"] Color_Black High Quality – high quality 14" Round Duct Pipe For 10 duct opening FR M 414 White

High Quality – high quality solid stamped steel with counter-sunk screw holes (screws included) and no sharp edges

+ Product Details Size - 36"w X 18"h is the size for the duct opening measurement only

Pressure rating: 2300 to 6500 psi

+ Product Details Size – 12" x 30" or 30" x 12" is the size for the duct opening measurement only

20" X 14" Steel Return Air Filter Grille for 1" Filter Removable Frame [Outer Dimensions: 22 5 8" X 16 5 8"] Color_Black High Quality – high quality 14" Round Duct Pipe For 10 duct opening FR M 414 White High Quality – high quality solid stamped steel with counter sunk screw holes (screws included) and no sharp edges + Product Details Size 36"w X 18"h is the size for the duct opening measurement only