For anyone who purchased these heat pads and didnt realize it was for a glass tank like me
a simple mod i did to use it on my DUBIA colony sterilte drawer system is to get a picture frame and remove the glass. Stick the heat pad to that glass and mount the glass to the plastic 
Just thought i'd share this in case anyone else had this problem lol....
Just thought i'd share this in case anyone else had this problem lol....