16" X 16" Heavy Duty Floor Grille - Fixed Blades Air Grille - Brown [Outer Dimensions: 17.75 X 17.75] Side Out Ceiling Register Box Insulation – A thick blanket

Insulation – A thick blanket of fiberglass insulation provides you with an R-Value of 4

The first number in a grille size

+ Product Details Size - 8"w X 34"h X 2"d (for duct opening measurement only)

+ Product Details Size – 24" x 28" or 28" x 24" is the size for the duct opening measurement only

+ Product Details Size – 2"w X 12"h is the size for the duct opening measurement only

16" X 16" Heavy Duty Floor Grille - Fixed Blades Air Grille - Brown [Outer Dimensions: 17.75 X 17.75] Side Out Ceiling Register Box Insulation – A thick blanket+ Product Details Size 16"w X 16"h is the size for the duct opening measurement only, actual front end outer dimensions are approximately 17. 75" width X 17. 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 shrink