24" X 36" or 36" X 24" Heavy Duty Floor Grille - Fixed Blades Air Grille - Brown [Outer Dimensions: 25.75 X 37.75] w16h16 It features an eight-tumbler lock

It features an eight-tumbler lock with a supplied key for secure access

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+ Product Description Introducing our 4" x 12" or 12" x 4" Floor Grille - a reliable and durable air grill designed for exceptional performance and built to last

4" X 14" Is The Size For The Duct Opening (floor/vent hole) Measurement Only

also referred to as T-Bar or Lay-in system

24" X 36" or 36" X 24" Heavy Duty Floor Grille - Fixed Blades Air Grille - Brown [Outer Dimensions: 25.75 X 37.75] w16h16 It features an eight-tumbler lock+ Product Details Size 24"w X 36"h or 36" X 24" is the size for the duct opening measurement only, actual front end outer dimensions are approximately 25. 75" width X 37. 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