heat a plywood cage 3/4inch thick

[phil_7870]

you might remember me from my last post i am making a 3/4 inch thick plywood cage for a boa and i am wondering if lights are the only way of heating this cage .if so could someone tell me what way they should be set up and what kinds of lights to use . and are lights alot harder and electricity than a heat mat . can you post afew pics that might help thanks very much also what are these heat panels like and were can i buy one