ArrestAir-Pro – External cowl for superior anti-draught performance 350mm (14”) long, 129mm (5”) diameter plastic tube Use 142mm diameter core bit drill Rubber seal gasket Internal inverted quad directional grille DiffuseAir. Stamped “Important do not block” Stainless steel screws, plugs and installation instructions 70 cm2 Free-area equivalent Gas: Max rated input 21 kW 71,000 BTU

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