Lets say you have a sealed hood with ventilation pipes and the 400W bulb is 6" up in that baby above the glass. The hand method leaves me wondering too because I can put my hand very close and not get "burned". :gunfighter2:

Q: Do you measure from the hood glass OR from the bulb? Could be the difference of 12" or 18"... :what:

I'm aiming for BIG Colas some where between Ron Jeremy and John Holmes "The Legend" size.