Mild Steel Zinc-plated; available in Vent or Safe Seal.
Available in 45 Degree, which are fabricated and 90 Degree, which 100 - 224 Dia are pressed construction; 250 Dia and above are fabricated in segments.
Twin bends, or Y-pieces are 'male' and slip inside spiral duct. A female coupler is required to join fittings together.
Diameters 180, 224, 280 and 600 are made to order, on a minimum 14 working day lead time.
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