12" X 4" Baseboard Return Air Grille - HVAC Vent Duct Cover - 7/8" Margin Turnback For Flush Fit With Baseboard Work - White w34h34 Actual Filter Size – 25

Actual Filter Size – 25 3/4"w x 7 3/4" x 1"

+ Product Details Size – 26"w X 26"h is the size for the duct opening measurement only

actual front end outer dimensions are approximately 10 5/8" width X 12 5/8" height

this thermostat guard is the perfect solution for safeguarding your temperature controls

The 45-degree louvers reduce system stress while optimizing performance

12" X 4" Baseboard Return Air Grille - HVAC Vent Duct Cover - 7/8" Margin Turnback For Flush Fit With Baseboard Work - White w34h34 Actual Filter Size – 25+ Product Details Size 12"w X 4"h Is The Size For The Duct Opening Measurement Only, Actual Front End Outer Dimensions Are 13. 75" Width X 5. 75" Height SEE BELOW IN DESCRIPTION How To Measure A Grille Powder Coat Finish Smooth, shiny, scratch resistant, beautiful. Looks like it was just waxed. High Quality Easy unrestricted airflow for your HVAC system 7 8" margin turnback. Carefully Shrink Wrapped With cardboard backing to prevent damage in shipment