This Xpelair WX6 Commercial Wall Fan with Safelock and Telescopic Wall Liner; is the classic face of commercial wall fans. It is slim, tough and reliable. The fan is a stylish ventilation designed for pubs, restaurants, offices, kitchens, factories, schools and shops. It is suitable for single, cavity brick and current timber frame walls. The fan has a low profile fascia making it easy to blend cleanly with commercial surroundings. For safety, a finger guard is integrated into the Ulta slim high gloss ABS fascia and the exterior wall grille design. WX6 units are supplied complete with a wall mounting kit which includes a wall liner. Sound pressure level 39 dB(A)@3m Hole diameter 245x268mm Wall thickness 292mm IPX4 rated motor 6 inch, high performance axial extractor ventilation unit The fans are suitable for single, cavity brick and timber frame walls Maximum extract performance FID 246 cubic metres per hour, 68 litres per second The sealed for life maintenance free bearings make the unit suitable for running at any angle