4" X 12" Modern Floor Register Grille With Dampers - Contempo Slotted Grate - HVAC Vent Duct Cover - Brushed Metal w25h25 + Product Details Size –

+ Product Details Size – 18"w X 30"h is the size for the duct opening measurement only

+ Product Details Size - 12"w X 36"h X 2"d (for duct opening measurement only)

+ Product Details Size - 6"w X 12"h X 2"d (for duct opening measurement only)

ISO Supply Diffusers perform efficiently with air loadings of 6 to 30 air changes per hour (based on 10 ft

+ Product Details Size - 16"w X 20"h is the size for the duct opening measurement only

4" X 12" Modern Floor Register Grille With Dampers - Contempo Slotted Grate - HVAC Vent Duct Cover - Brushed Metal w25h25 + Product Details Size –+Product Details Size 4"h x 12"w is the size for the duct opening measurement only, actual front end outer dimensions are approximately 5. 5" width x 13. 75" height. High Quality Solid rigid steel body for durability and reliability with dampers operable by switch for airflow directional control. Installation Location Floor. Design Premium plated finish and modern contempo design forming a luxurious & impressive piece for your home. Quality Packaging