Fit for duct opening size: 6" x 14". Overall size of flush mount register with frame: 8-7/8" x 16-7/8". Please kindly read size information in listing picture before you make decision to buy this floor register. As wood products come from nature, our floor register products are unfinished, there will be slight difference on color and wood grain. It is very hard to guarantee that the color and grain of the products you receive are consistent with the picture. The white oak floor register is fit for 3/4 inch thickness hardwood flooring with tongue and groove structure. This is not drop in floor register, it keeps flat with flooring after installation, if you need drop in style, please search it in our store. Unfinished solid white oak wood with louvered design. 1 inch frame is strong enough to support the weight of an average person, to keep you safe when you step on the wood vent. Flush mount vent with sliding damper which is easy to control the airflow. It is recommended that this floor register be installed during the installation of your white oak hardwood flooring. Please ask a skillful carpenter to help you if you install this floor register onto your current opening. Highly recommended that the floor register not to be installed in high traffic area. Flush mount white oak floor register is made of solid hardwood white oak with louvered design. This type of wood floor register includes convenient opening closing rust-proof sliding damper. The floor register with size 6"x14" is fit for 6"x14" duct opening. Flush mount floor register sits flush with 3/4" hardwood flooring. It is designed to lay flat with the surface of the hardwood flooring, solid white oak wood construction with flush mount structure and metal damper, ideal for return air with removable filter pad. It is recommended that this floor register be installed during the installation of your white oak hardwood flooring, while the use in high traffic area is not recommended.