Sheet Metal

Return Air Boxes – Insulated

Metal Return Air Boxes sprayed externally with a polystyrene insulation.

Item #SpigotsSize (mm/inch)Spigot Sizes (mm/inch)
4421751550x550x250 / 22x22x10Ø350 / Ø14
4421761550x550x250 / 22x22x10Ø400 / Ø16
4422532550x750x250 / 22x30x10Ø350 / Ø14
4422521550x750x250 / 22x30x10Ø400 / Ø16
4422511550x750x250 / 22x30x10Ø400 / Ø16
4422542550x750x250 / 22x30x10Ø400 / Ø16
4422301600x400x250 / 24x16x10Ø350 / Ø14
4422311600x400x250 / 24x16x10Ø400 / Ø16
4421791750x400x250 / 30x16x10Ø350 / Ø14
4421801750x400x250 / 30x16x10Ø400 / Ø16
4422341750x450x250 / 30x18x10Ø400 / Ø16
4422561750x500x250 / 30x20x10Ø400 / Ø16
4422701800x500x250 / 32x20x10Ø500 / Ø20
4421992900x400x250 / 35x16x10Ø350 / Ø14
4421981900x400x250 / 35x16x10Ø400 / Ø16
4422002900x400x250 / 35x16x10Ø400 / Ø16
4422422900x500x250 / 35x20x10Ø350 / Ø14
4422411900x500x250 / 35x20x10Ø400 / Ø16
4422432900x500x250 / 35x20x10Ø400 / Ø16
4422691900x500x250 / 35x20x10Ø500 / Ø20
4421852900x550x250 / 35x22x10Ø350 / Ø14
4421862900x550x250 / 35x22x10Ø400 / Ø16
44218221150x550x250 / 45x22x10Ø350 / Ø14
44218321150x550x250 / 45x22x10Ø400 / Ø16
44218421150x550x250 / 45x22x10Ø450 / Ø18

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