approximately three inches the raised uv window 12 includes upward extending sides 36 which support the sandwich 11 having a height h between approximately u00bd inches and approximately one inch above a top surface 38 of the housing 10 a and preferably approximately 0 7 inches above the top surface 38 of the housing 10 a this positioning above the top surface 38 advantageously provides space for the clamps 34 as well as facilitating the assembly placement and removal of the sandwich 11 from the raised window 36 for example provides space for a user 39 s fingers between the sandwich 11 and the top surface 38 the raised uv window 12 may include a clear glass cover or a cover made from any material which is transparent to uv light or may be an opening with no cover a timer 30 controls power provided to the uv light 32 by a cord 28 and plug 26 a sandwich 11 is held together by clamps 34 and rests on the window 12 for timed exposure to uv light raising the window 12 allows space for the clamps 34 on the sandwich 11 to clear the top surface of the box 10.