HBW 24"x12" Stamped Face Steel Filter Return Grille Vent Cover White Poweder Coating with Frame Outside Dimension 26.6"x14.6"

HBW Filter Return Grille listed size 24” wide and 12” tall is for the duct opening measurement. The grille has hinged face door for filter of same size with thickness of 1”. Overall outside dimension is 26.6” wide and 14.6” tall. Difference Between grilles, registers, diffusers and vents：Grille – a series of deflectors in the shape of blades or fins fixed in a frame to allow air to pass through from duct to room spaceRegister – a grille attached with a damper or valve to control the air flow volumeDiffuser – a unit with duct connecting piece and a larger face piece with multiple blades to spread out air flow to multiple directions. Examples are drop ceiling T-bar diffusers and round ceiling diffusers.Size Selection GuideMeasure the size of the air duct opening(the size of the “hole” ). Select the listed size that match the duct opening size.The outside or overall size is 2.6” larger for both width and length so it can cover the “hole”.Do not use outside measurement for size selection or it would be too bit to fit.Width vs HeightThe first measurement in a return grille size is the width(horizontal measurement), the second measurement) is the height(vertical measurement). For example: if the hole on the wall is 24" wide by 12" tall, buy a 24x12 grille; If the hole is 12" wide by 24" tall, buy a 12x24 grille.

• The Listed size 24"x12" is for inside duct opening measurement, actual outside dimension is 26.6"x14.6"
• Stamped Face Steel Construction with 1/2" fin spacing for high air flow
• Screws are included for easy installation
• White Powder coating with matte finish
• Individually shrink wrapped with card board pad in the back for extra protection