HDH 250 – Roof ventilation cowl – Helios
Horizontal roof ventilation hood For covering convection vents and supply air openings in the roof. Same design as horizontal outlet roof fans RD. With regard to mechanical ventilation, the resulting flow losses must be taken into account (see diagrams).
PRODUCT PDF
150mm - Domus EasiPipe Air Valve - Extract Or Supply Suspended Ceiling (Fire Rated) - White - Part No. 136FR-26M
HWW 450/4 - Helios - Axial Plate Fan - Low Pressure
Revolution SLC1000/6A-3AC - ELTA - Long Cased Axial Flow Fan 

