Multi Drilled Flange Ring – 500mm Diameter (Pair) Features & Benefits Fits directly into ISO duct diameters Unique locking groove for flexible securing Two standard fixing patterns included in one product (A & B) Seamless construction for improved joint integrity Hot dip galvanised material for improved longevity Arcuate slots for faster installation Product data link: MULTI DRILL FLANGE DATA PDF https://www.acoustica.co/product/ip01-limpet-fan-flange
