Series Specially Designed Airflow Regulators Limit High Cfm Range Hoods To A Maximum Of Less Than 300 Cfm, Complying With Most Local Codes For Hood Installations Without The Need For Make-Up Air. As A Result, These Kits Give Access To A Broader Offering Of Styles And Designs Within The Standard Broan Line Of Range Hoods Without The Need For Costly Add-On Systems In The Home. (Ul)(Li)7" And 8" Round (/Li)(Li)The Individually Packaged Arp Cfm Reducer Kits Come With: (Ul)(Li)A Reducer Plate (/Li)(Li)Screws (/Li)(Li)Installation Instructions (/Li)(/Ul)(/Li)(/Ul) Everything You Need To Make Installation Effortless! Best Range Hood Models Tested For Use With Respective Cfm Reducer Kits. (Ul)(Li)Cp35, Cp55Iq(/Li)(Li)Cpm(/Li)(Li)Wp28M + P6(/Li)(Li)U102I(/Li)(Li)Wp29M + P6(/Li)(Li)Cc32I(/Li)(Li)Up26M + P6(/Li)(Li)Up27M + P6(/Li)(/Ul)