Advanced Wi-Fi capabilities for voice commands make it easier than ever for you to improve the air quality in your kitchen hands-free with the Broan-NuTone Voice Control Custom Range Hood Insert. Perfect for custom kitchen designs and streamlined cabinet installations, this 21-inch one-piece insert protects the bottom of your cabinetry and looks great doing it- the flush design and depth adjustment capability make this stainless steel insert suitable for any kitchen appearance. This hood insert comes with EZ1 clips, making solo installation less daunting both for professional and DIY installers, and Code Ready Technology (CRT) to automatically adjust the CFM and fan speed to meet make-up air codes where applicable. This HVI certified range hood insert includes a four-speed backlit touch control panel for convenience, when not using voice commands, and clears the air at a max blower speed of 450 CFM to remove smoke, grease, exhaust, and odor from your kitchen. Operating at a quiet 1 sone of noise, this Energy Star Certified insert is nearly silent, so you won't have to yell over the sound. This innovative insert will continue to clear polluted air from your kitchen even after you've finished cooking thanks to the 10 minute delay function. Featuring bright, 2-level LED lighting, this custom built-in range hood insert power pack makes evening cooking accessible and easy. The smooth, stainless steel surface and quick-release dishwasher-safe aluminum mesh filters allow for easier cleaning, and an optional non-duct filter kit (sold separately) eliminates the need for strenuous ductwork. This 11.44" x 21" x 10.56" insert is ADA compatible, and works in tandem with an optional remote wall control (sold separately).