The integral cover on the Hughes STD-45G eyewash protects the bowl and nozzles from dust and debris. Separate nozzle dust covers, used on open-bowl models, are not required. When the hinged bowl cover is opened, the eyewash starts to operate immediately. Made from unbreakable ABS, it has a high flow rate of 5.28 gallons/minute and is fully compliant with ASNI Z358.1-2009.Integral cover

Hughes North America Inc.,, (866) 312-1652.