Return Air Boxes – 10mm Insulation

Metal Return Air Boxes sprayed externally with a polystyrene insulation

442133 Metal ReturnAirBox 640x640
442133 Metal ReturnAirBox 640x640
Item #SpigotsSize (mm/inch)Spigot Size (mm/inch)
442133 1 550x550x150 / 22x22x6 Ø400 / Ø16
442134 1 550x550x150 / 22x22x6 Ø450 / Ø18
442135 1 600x400x150 / 24x16x6 Ø400 / Ø16
442136 1 600x400x150 / 24x16x6 Ø450 / Ø18
442140 1 750x450x150 / 30x18x6 Ø450 / Ø18
442141 1 750x450x150 / 30x18x6 Ø400 / Ø16
442152 2 900x500x150 / 36x20x6 Ø400 / Ø16
442153 2 900x500x150 / 36x20x6 Ø350 / Ø14
442150 2 1150x550x150 / 46x22x6 Ø400 / Ø16
442151 2 1150x550x150 / 46x22x6 Ø450 / Ø18