16" X 18" or 18" x 16" Heavy Duty Floor Grille - Fixed Blades Air Grille - Brown [Outer Dimensions: 17.75 X 19.75] Floor Register / Modern Victorian + Product Details Size –

+ Product Details Size – 8"w X 12"h or 12" x 8" is the size for the duct opening measurement only

75"H – fits a 18" X 4" duct opening

actual front end outer dimensions are 25" Width X 19" Height

you can cut or trim your vent cover to more precisely fit your air vent

+ Product Details Size – 24"w X 16"h pleated MERV 8 filter for HVAC return filter grille - 3 Pack

16" X 18" or 18" x 16" Heavy Duty Floor Grille - Fixed Blades Air Grille - Brown [Outer Dimensions: 17.75 X 19.75] Floor Register / Modern Victorian + Product Details Size –+ Product Details Size 16"w X 18"h or 18" x 16" is the size for the duct opening measurement only, actual front end outer dimensions are approximately 17. 75" width X 19. 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