XpelairGX9 commercial window fans are ideal for use in pubs, restaurants, offices, kitchens, factories, schools and shops. They can be window mounted as supplied or wall mounted using an optional wall kit. Suitable for sealed single and double glazed window installations with the longer ladder strips supplied, these fans also feature a safety finger-guard integrated into the housing and window grille. GX9 fans are reversible and feature enclosed external rotor motors to provide constant volume outputs, even in gusty conditions. A tamper-proof positive plug and socket assembly provides a means of isolation for service access