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Technical Data Gamma Pads Rooftop Supports Concrete Inserts Beta Clamps & Z-Clamps Loop & Ring Clamps Spring Steel Electrical Fittings Pipe & Conduit Supports General Fittings Channel Nuts & Hardware Channel IntroductionZSi-Foster Engineering Catalog – 235 –WARNING: These products can expose you to chemicals including lead, which is known to the State of California to cause cancer, and which is known to cause birth defects or other reproductive harm. For more information go to www.P65Warnings.ca.gov.CBN-DSFW SeriesFixed Width Duct SupportThe CBN-DSFW Series is designed specifically for supporting duct work. The cross beam provides easy size adjustments. Custom lengths are available upon request.Standard strut mount pipe clamps are used to secure the pipes.Cush-A-Block® Rooftop SupportsStandard Finish: Pre-galvanized (PG) or Hot Dipped Galvanized (HG)HeightBaseLengthWidthDuctWWW.ZSI-FOSTER.COMWWW.ZSI-FOSTER.COMWWW.ZSI-FOSTER.COMWWW.ZSI-FOSTER.COMCBN-DSFW Duct Support Series With Fixed Width & Adjustable Heightwith 1-5⁄8\Model No. Height Width BaseLengthNo. ofBasesUniform Load Capacity Lbs(kN) *CBN1-DSFW23\18\24\42042 * (9.08 kN)CBN2-DSFW 24\1531 * (6.81 kN)CBN3-DSFW 36\1021 * (4.54 kN)CBN4-DSFW 48\766 * (3.40 kN)CBN5-DSFW29\18\24\42042 * (9.08 kN)CBN6-DSFW 24\1531 * (6.81 kN)CBN7-DSFW 36\1021 * (4.54 kN)CBN8-DSFW 48\766 * (3.40 kN)CBN9-DSFW41\18\24\42042 * (9.08 kN)CBN10-DSFW 24\1531 * (6.81 kN)CBN11-DSFW 36\1021 * (4.54 kN)CBN12-DSFW 48\766 * (3.40 kN)CBN13-DSFW53\18\36\62042 * (9.08 kN)CBN14-DSFW 24\1531 * (6.81 kN)CBN15-DSFW 36\1021 * (4.54 kN)CBN16-DSFW 48\766 * (3.40 kN)* This load is only for the capacity of the components in this assembly. Please consult roofing manufacturer or engineer for roof load capacity.