12 inch axial extract or intake commercial wall fan, 85W power ratedSilent operation integral electro-thermal shutter to prevent backdraughtsIntake or extract selection, or 2 speed reversible with FR22/30 controllerAdjustable telescopic metal wall liner (275 to 375mm wall thickness)WX commercial duty wall fans are designed for pubs, restaurants, offices, kitchens, factories, schools and shops. They are suitable for single, cavity brick and timber frame walls and available in 6", 9" and 12" sizes. The low profile white fascia is styled to blend in cleanly with commercial surroundings. For safety, a finger-guard is integrated into the ultra slim high gloss ABS fascia and the exterior wall grille design. On WX9 and WX12 units a positive plug and socket assembly provides a means of isolation. All WX models come complete with a wall mounting kit which includes a cut to size corrugated plastic wall liner or Safe-Lock metal telescopic wall liner. Both the WX9 and WX12 are reversible and featu