Broan? 20-1/2-Inch Custom Range Hood Power Pack, Silver Finish, 250 Cfm Nutone Custom Power Module Nspm250 Is A Fully Integrated Range Hood Insert System With A 250 Cfm Fan Designed To Fit Flush With The Bottom Of A Cabinet Or Custom Hood Installation. Select This Silver-Finished Blower With Multi-Speed Control To Provide Quiet, Effective Performance. Incandescent Lighting Complements The Beauty Of A Fully Enclosed Bottom Containing Dishwasher-Safe Filters To Make Cleaning Easy. Designed To Be Used With Custom Liners (Not Included) In 30 In. And 36 In., "B" Or "T" Design.