Watts Radiant’s SmartTrac™ is a non-structural, modular board designed for subfloor, wall and ceiling radiant heating and cooling applications. It is manufactured from 5/8" (15.88 mm) thick MDF (medium density fiberboard) and is designed for use with 3/8" (9.5 mm), ASTM F876 PEX or ASTM F2623 PERT.
Watts Radiant SmartTrac Utility SubFloor Panel, 2 ft. x 2 ft. for 3/8 in. Tubing, Pack of 5