16" x 36" or 36" x 16" Cube Core Eggcrate Return Air Filter Grille for 1" Filter Insulated Line The process is intuitive: simply Product Details Size 14 Material_Anodized Aluminum LR164

The process is intuitive: simply select the appropriate ceiling square for your grill

+ Product Details Size – 10" X 2" is the size for the duct opening (floor/vent hole) measurement only

For 6" Round Duct Opening - Spiral or Flex

12" x 3" Decorative Wood Air Vent HVAC Duct Cover Grille - Polished Finish Red Oak Wood - 2-Way Air Direction

actual front end outer dimensions are approximately 25

16" x 36" or 36" x 16" Cube Core Eggcrate Return Air Filter Grille for 1" Filter Insulated Line The process is intuitive: simply Product Details Size 14 Material_Anodized Aluminum LR164 The process is intuitive: simply select the appropriate ceiling square for your grill + Product Details Size – 10" X 2" is the size for the duct opening (floor vent hole) measurement only