Film heaters are extremely thin planar heaters with a thickness of .02" (0.4 mm) or less. Since this heater uses a polyimide sheet, it has superior resistance to chemicals. Thanks to the unique manufacturing method, it's also siloxane-free. Use this heater with peace of mind in environments where there are concerns that siloxane may have a detrimental effect on electrical devices, such as in clean rooms or sealed control boxes. The heater can also be modified for complex shapes, such as holes, notches, or curls.