Broan-NuTone 634 Broan Steel 3-1/4x 10" Roof Cap for 3-1/4 x 10 8-Inch Round Duct, 1 Upgrade your range hood with Broan-NuTone's Roof Cap! This roof cap is constructed of durable 24-gauge CRCQ steel with a black electrically-bonded epoxy finish to serve as a functional and decorative addition to your home. This roof cap maximizes the air and sound performance of your Broan-NuTone ventilation fan or range hood. It's designed to fit with 3.25" x 10" or up to 8" round duct for flexible installation. It includes a built-in, backdraft damper and bird screen provide a dependable roof cap you can rely on. The footprint measures 18.75" x 14.25" for a well-balanced fit. This roof cap is for use with range hoods, LoSone fans, and bathroom ventilation fans. Upgrade your home with Broan-NuTone's Roof Cap today! Features HIGH-QUALITY ROOF CAP: Roof cap for use with Range Hoods, LoSone Fans, and bath ventilation fans maximizes the air and sound performance of your fan or range hood DURABLE: Constructed of sturdy, 24-gauge CRCQ steel construction with a black electrically-bonded epoxy finish to ensure durability and lasting use RELIABLE: Includes a built-in, backdraft damper and bird screen provide a dependable roof cap you can rely on SECURE: Footprint is 18.75" x 14.25" for a secure, well-balanced fit EASY INSTALLATION: Roof cap is designed to fit with a 3.25" x 10" or up to 8" round duct to provide a simple, flexible installation USA SHIPPING estimates delivery times and we work to get your item to you as quickly as possible and within those times, but please know it may take slightly longer than the estimate.