4" x 12" Or 12" X 4" Heavy Duty Floor Grille - Fixed Blades Air Grille - Brown [Outer Dimensions: 5.75 X 13.75] Color_Red Oak Wood Backflow Stopper - Yes

Backflow Stopper - Yes

Security: The access panel is equipped with a slotted lock

Actual Filter Size – 9 3/4"w x 9 3/4" x 1"

+ Product Description Introducing our 24" x 36" or 36" x 24" Floor Grille - a reliable and durable air grill designed for exceptional performance and built to last

4" x 12" Or 12" X 4" Heavy Duty Floor Grille - Fixed Blades Air Grille - Brown [Outer Dimensions: 5.75 X 13.75] Color_Red Oak Wood Backflow Stopper - Yes+ Product Details Size 4" x 12" or 12" x 4" is the size for the duct opening measurement only, actual front end outer dimensions are approximately 5. 75" width X 13. 75" height. High Quality High grade steel construction meant for high foot traffic areas. Installation Location Floor. Design Easy drop in installation. Powder Coat Finish Smooth, shiny, scratch resistant, with no sharp edges. Looks like it was just waxed. Quality Packaging Carefully