Aarco Basement ventilation fans are available in various configurations and models. Come withDouble Fanged casing in mild steel or galvanized steel. Fans can be DIDW SISW with Aluminum Impeller. Motors up to 2.2kW above are with star/delta starting. Uni-directional, reversible fan available upon request. Silencer Outer casing made of galvanized steel sheet and inner casing made of galvanized steel perforated sheet. Inlet bell-mouth provided for smooth airfow. Glass fibre filler material to achieve excellent acoustic performance. Each model is available with 2D silencer as standard. Non-standard length to meet special performance requirement can be supplied upon. CFD analysis available. Insulation Class F Class H available.