Oh no not at all i should have known better. Lol anyways i cant remember the measurements its diy its like 34x18x18 or something. i called pro products with the measurements ect and they gave me the correct one. I ran it with out the thermostat for a bit before i put the snake in and so i know it gets hot enough. The probe is on the hot side on the substrate. Temp gun reading 85 hot side and 79 cool side. I dont know how to upload pics on here i tried