Rytons A1® Fire-rated Retrofit Ducting Kit 100mm Dia. with 175mm x 175mm Return Grille Return Grille (A1RD4LV): 175mm W x 175mm H x 8mm D, corner screw holes, 97mm Dia. x 25mm D spigot. Free area: 16,640mm² (over 90% of the duct). Custom RAL colour grille in matt, semi-gloss or gloss finish achieving Class A2-s1, d0. 108mm dia. sheet rolled tube to encase in situ ducting 100mm dia. 50mm flange (with eight screw holes) at the end of the tube for fixing. Custom overall length (refer to drawing). Properties: Class A1 fire-rated 0.9mm galvanised steel. Class A2-s1, d0 fire-rated RAL colour powder coating. Spot welded. Everbuild Fire Mate intumescent and acoustic sealant used on all gaps. Registered Design 6479789. Patent Approved. Product Code: A1RFDK100LV. Download Drawing.
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