Tungsten Filament The Philips infrared incandescent reflector lamps are designed to work in the toughest environment such as farm, bathroom or kitchen and their nearest surrounding. They have a reinforced construction thanks to hard glass use. Their compact form and universal cap base allow them to be used with any suitable equipment. A very good method of generating warmth is by using heat lamps. The Philips infrared lamps provide direct, draught-free warmth to the animals, people, but also food. These benefits have made farmers, consumers and cooks around the world choose Philips infrared lamps, because they are the sturdiest, most efficient lamps available for these applications. Highly efficient, instant response tungsten filament lamps, with a life expectancy of 5000 hours (avg.)<BR/><B>Hard pressed</B>: these have an all round reflector, which directs more heat into the beam, and enables them to replace higher wattage blown types<BR/><B>Normal blown</B>: these are suitable for industrial use, where there is no chance of splashing that can cause thermal shock and lamp failure<BR/><B>Hard blown</B>: suitable for all applications