10" X 18" Steel Return Air Filter Grille for 1" Filter - Removable Frame - [Outer Dimensions: 12 5/8" X 20 5/8"] Fixed Blades with Damper Actual Filter Size – 11 Compatible With Duct 7in Applications This sheet metal DDAG-A-1212

Actual Filter Size – 11 3/4"w x 13 3/4" x 1"

actual front end outer dimensions are 15

Actual Filter Size – 13 3/4"w x 17 3/4" x 1"

+ Product Details Size – 16"w X 32"h is the size for the duct opening measurement only

2" X 10" Brass Victorian Floor Register Grille - Modern Contempo Decorative Grate - HVAC Vent Duct Cover - Brass Plated

10" X 18" Steel Return Air Filter Grille for 1" Filter Removable Frame [Outer Dimensions: 12 5 8" X 20 5 8"] Fixed Blades with Damper Actual Filter Size – 11 Compatible With Duct 7in Applications This sheet metal DDAG A 1212 Actual Filter Size – 11 3 4"w x 13 3 4" x 1" actual front end outer dimensions are 15