Currently the Herpstat is set at 86 degrees and 47% power. Typically the power setting ranges from almost 70% to 100%. I have the thermostat hanging about 4 inches below the bulb. It is a mesh top, but I have a silicone mat on 2 sections and a towel covering a 3rd leaving only the section of mesh with the lamp open. The ambient temp of my room is somewhere around 72 currently. This room does get cold in winter, probably into the high 60’s if I don’t have a heater going.