The Harbour Duo 4ft weatherproof LED batten enables you to replace traditional fluorescent fittings on a 1 for 1 basis while providing energy savings exceeding 50%. The base is flat bottomed to aid mounting and is manufactured from high impact polycarbonate for strength and durability. It has a unique design which allows selection between two wattages increasing its versatility and the IP65 rating means it is suitable to be installed in wet and dusty environments such as wash down areas, warehouses, factories and garages. The fitting has a special clip feature allowing the diffuser to hang from the body without support for easy installation and the opal polycarbonate diffuser has integral linear prisms which provides a uniform light spread without dark or light extremes.Colour: GreyMaterial: PlasticWattage: 20W/40W equivalent to 2 x 36W fluorescent.Light Colour: Neutral White (4000K).Average Life Expectancy: 50,000 hours.Guarantee: 5 years guarantee.Dimmable: Non-Dimmable.IP Rating: IP