Air distribution box (11)
Boiler connection element for heat recovery unit for single family house (1)
Concentric flue gas/air supply form piece, 2 connections (2)
Connecting ring, hose/valve (16)
Coupling piece embedded duct (6)
Feed-through roof tile (12)
Flanged sleeve air duct (1)
Flue gas/air supply collector (1)
Grid shoe for air duct (1)
Plastic slide plate, feed-through tile (5)
Roof boarding bracket (6)
Roof duct for heat recovery ventilator (11)
T-Y-piece embedded duct (9)
