
Roof Curb Adapter, Adapter Type Increaser, For Fan Base Size 29 1/2 in, For Curb Size 40 1/2 in, Material Steel, For Fan Type Downblast Fans, Filtered Supply Fans, Upblast Fans, Curb Side Width 40 1/2 in, Fan Side Width 29 1/2 in, Finish Galvanized, Function Adapts 30 in Fan Base to Fit 40.5 in Roof Curb, Includes (8) 1/4-20 Tinnerman Speed Nut, (8) 1/4-20 x 3/4 Bolts, Metal Material Thickness 18 ga, Number of Fasteners per side 2, Overall Height 8 1/2 in, Top Flange Height 6 in
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Corporate Procurement & PO Processing
Formal Purchase Orders (POs) and tax-exempt ordering are accepted for commercial contractors and institutional facilities.
Apply for Trade Account & Terms →📋 Procurement & Shipping Notice
- LTL Freight Dispatch: Heavy commercial units ship directly via insured LTL carrier with delivery coordination included.
- Project Timelines & Submittals: Need guaranteed delivery dates, formal submittals, or tax-exempt processing?
👉 Request a Commercial Quote or contact our procurement team for direct freight scheduling.