Some members on here use the Hydrofarm MTPRTC thermostat:
http://www.amazon.com/Hydrofarm-MTPR...1529683&sr=1-7
And some use the ReptiTemp 500r:
http://www.amazon.com/Zoo-Med-ReptiT...6933314&sr=1-1
The Hydrofarm is a digital thermostat that you set the temp on. The ReptiTemp500r has a dial that you have to tweak until you get it set at the right temp.
I'm not sure which hides you are talking about, but if you are looking for the black plastic ones, here are a couple of links:
http://www.reptilebasics.com/hide-boxes/
http://npicages.com/abs_plastic_hide_boxes.html