2" X 12" Modern Floor Register Grille With Dampers - Contempo Slotted Grate - HVAC Vent Duct Cover - Brushed Metal 8in diameter then you'll need a 14-inch

then you'll need a 14-inch round vent

75" width X 27

ensuring it fits most standard thermostat models

actual front end outer dimensions are approximately 26 5/8" width X 12 5/8" height

2" X 12" Modern Floor Register Grille With Dampers - Contempo Slotted Grate - HVAC Vent Duct Cover - Brushed Metal 8in diameter then you'll need a 14-inch+Product Details Size 2"h x 12"w is the size for the duct opening measurement only, actual front end outer dimensions are approximately 3. 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