Sheet Metal

Return Air Boxes – 10mm Insulation

Item #SpigotsSize (mm/inch)Spigot Size (mm/inch)
4421331550x550x150 / 22x22x6Ø400 / Ø16
4421341550x550x150 / 22x22x6Ø450 / Ø18
4421351600x400x150 / 24x16x6Ø400 / Ø16
4421361600x400x150 / 24x16x6Ø450 / Ø18
4421401750x450x150 / 30x18x6Ø450 / Ø18
4421411750x450x150 / 30x18x6Ø400 / Ø16
4421522900x500x150 / 36x20x6Ø400 / Ø16
4421532900x500x150 / 36x20x6Ø350 / Ø14
44215021150x550x150 / 46x22x6Ø400 / Ø16
44215121150x550x150 / 46x22x6Ø450 / Ø18

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