24"W X 4"H [Duct Opening] Steel Air Vent Return Grille - HVAC VENT DUCT COVER DIFFUSER - [Outer Dimensions: 25.75"W X 5.75"H] Material_Aluminum These grilles and registers give w6h6 actual front end outer MFFG410-1

These grilles and registers give you an extra measure of quality that are visible to your family members and house guests

R value rating of insulation - R3

you can watch this informative video tutorial: How to Measure Your Vent Hole Before Ordering a Grille

heat pump and centralized air ducted units

24"W X 4"H [Duct Opening] Steel Air Vent Return Grille HVAC VENT DUCT COVER DIFFUSER [Outer Dimensions: 25.75"W X 5.75"H] Material_Aluminum These grilles and registers give w6h6 actual front end outer MFFG410 1 These grilles and registers give you an extra measure of quality that are visible to your family members and house guests R value rating of insulation R3