10" x 4" Decorative Wood Supply Air Vent HVAC Duct Cover Grille - Polished Finish Red Oak Wood - 2-Way Air Direction - [Outer Dimensions: 12w X 6"h] Return Grille Solid Base Construction – Features Product Details Size 14 Material_Anodized Aluminum LR164

Solid Base Construction – Features a solid base for stable installation and reliable protection

+ Product Details Size – 14"w X 18"h is the size for the duct opening measurement only

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

actual front end outer dimensions are approximately 14 5/8" width X 30 5/8" height

including the ability to mount without removing the thermostat when using the ring base

10" x 4" Decorative Wood Supply Air Vent HVAC Duct Cover Grille Polished Finish Red Oak Wood 2 Way Air Direction [Outer Dimensions: 12w X 6"h] Return Grille Solid Base Construction – Features Product Details Size 14 Material_Anodized Aluminum LR164 Solid Base Construction – Features a solid base for stable installation and reliable protection + Product Details Size – 14"w X 18"h is the size for the duct opening measurement only