Tubular Ceramic Metal Halide Lamps are available in 70 Watt, 100 Watt and 150 Watt coated. They offer excellent colour rendering CRI Ra. Philips reference for these is CDOTT Master City. Many metal halide lamps are interchangeable but not all. If you are seeking a cheaper alternative to replace your existing lamp, please call us and we will be able to advise you on a compatible product.