This Robus high bay is prewired with 1m flex and SWIFT connector and is suitable for use in warehouses manufacturing plants garages workshops aircraft hangars retail superstores gymnasiums and more. it is a perfect LED replacement for 300W metal halide highbay fittings with a die cast aluminium housing with polycarbonate diffuser which provides a high impact rating of IK09. there is a surface mounting bracket accessory available. The fitting itself has a very high efficacy of 184lm/W and wide operating temperature range of -25 to 45 degrees. It is dimmable with most of the 1-10V systems and suitable for switching by PIR Microwave or Photocell