12"W X 16"H [Duct Opening] Steel Air Vent Return Grille - HVAC VENT DUCT COVER DIFFUSER - [Outer Dimensions: 13.75"W X 17.75"H] w24h24 + Product Description Introducing our MFFG810-1 Product Details Size 20 Compatible with Duct 3"

+ Product Description Introducing our 18" Wooden Corner Baseboard Grille - a sophisticated addition to elevate your HVAC system and interior decor

that will overlap at wall joint

if your hole is 20" wide by 14" tall

Crafted from solid stamped steel

no questions asked

12"W X 16"H [Duct Opening] Steel Air Vent Return Grille HVAC VENT DUCT COVER DIFFUSER [Outer Dimensions: 13.75"W X 17.75"H] w24h24 + Product Description Introducing our MFFG810 1 Product Details Size 20 Compatible with Duct 3" + Product Description Introducing our 18" Wooden Corner Baseboard Grille a sophisticated addition to elevate your HVAC system and interior decor that will overlap at wall joint