Product Overview Tech Specs Manuals and Guides Product Overview This part is not returnable. Unsure if a part is compatible? Contact us. The 1033741 is a replacement DSI (Direct Spark Integrated) ignition control board. It is manufactured by Nortek for Reznor. It is for use with all UBX, UDX, UBZ, and UDZ models. Item may differ in appearance than image. Tech Specs Product Type: DSI Control Board California residents see Prop 65 WARNINGS WARNING! Warning: Cancer and Reproductive Harm - www.p65warnings.ca.gov Product Manuals Load More