Flush Mount Wood Floor Air Vent Register,Grill ,Unfinished.We design and manufacture high quality flush mount wooden air vents that are able to withstand daily abuse of high traffic areas in your home.Vents come with a convenient steel damper that makes controlling air flow a breeze.Vents come in red, white, oak, maple and jatoba.Fits Duct Size: 4" x 10" Overall Frame Size: 6 3/4" x 12 1/2" Designed for use with 3/4" Thick Solid Hardwood Flooring.We have different sizes. Please contact me and I will give you the best possible price, n. Duct Opening Damper O/S Dimensions2"x10" No 4-1/2" X 12-1/2"2"x12" No 4-1/1" X 14-1/2"3"x10" Yes 5-5/8" X 12-1/2"3"x12" Yes 5-5/8" X 14-1/2" 4"x10" Yes 6-3/4" X 12-1/2"4"x12" Yes 6-3/4" X 14-1/2"6"x10" No 9-1/16" X 12-1/2"6"x12" No 9-1/16" X 14-1/2"We have different sizes. Please contact me and I will give you the best possible price,