Along with a UTH you will need a thermostat to regulate the temp. I have a plastic shelving unit I bought from Lowes that's probably similiar to what you're getting. I use Flexwatt and have it taped directly to the rack towards the back. I slide the tubs over the tape so the back 1/4 of the tub is directly over the heat tape. I've used a few different kinds of tubs, but mainly Sterilite and Rubbermaid. Both work just fine.