8" X 24" Or 24" X 8" Heavy Duty Floor Grille - Fixed Blades Air Grille - Brown [Outer Dimensions: 9.75 X 25.75] snips + Product Details Size &

+ Product Details Size & Compatibilty - The 20" to 18" round metal pipe reducer & increaser 30 gauge is compatible with duct 20" to 18"

Minimum Efficiency Reporting Value (MERV) is a standard that rates the overall effectiveness of air filters

+ Product Description Introducing our 8" x 18" or 18" x 8" Floor Grille - a reliable and durable air grill designed for exceptional performance and built to last

The first number in a grille size

PLASTIC EQUIPMENT PAD: Perfect mounting base for HVAC outdoor units and other outdoor equipment

8" X 24" Or 24" X 8" Heavy Duty Floor Grille - Fixed Blades Air Grille - Brown [Outer Dimensions: 9.75 X 25.75] snips + Product Details Size &+ Product Details Size 8"w X 24"h or 24" x 8" is the size for the duct opening measurement only, actual front end outer dimensions are approximately 9. 75" width X 31. 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