APDTY 112724 Cabin Air Filter Add-On Retro Kit (Standard Filter, Cover, Screws & Instructions) Fits 2007-2013 Escalade / Avalanche / Silverado 1500 2500 3500 Pickup / Suburban 1500 2500 / Tahoe / Sierra 1500 2500 3500 Pickup / Denali / Yukon / Denali Allows Installation Of A Cabin Air Filter On Models That Do Not Currently Have A Cabin Filter Premium Carbon Activated Charcoal Filter Traps Odors As Well As Removing Particulates Prevents Leaves And Other Debris From Entering The HVAC Box Meets or Exceeds OEM Specifications