if you are talking about sauzo's t-10's just type in "animal plastics" into Google and their you go if you have any questions about anything on that website just give them a call or email.... the customer service is top notch and I personally love their cages I have two t-8's right now about to order my third one.
as for heating that used cage (after a serious scrub down lol) I would recommend a radiant heat panel hooked to a t-stat I use reptile basics rhp you can also give them a call or email with the dimensions and he will tell you what size will work best for your needs iv also heard good things about pro products heat panels but I have never used them before.... hope this helps and if you already knew any this information sorry for the rambling lol