Hacker Industries Inc. introduces GYP-SPAN® Radiant Commercial Grade (CG) formulated for uniform heat transfer and higher surface and compressive strength to withstand the heavy trade activity related to commercial construction sites. Suitable for use over hydronic tubes or electric cables, GYP-SPAN® Radiant CG delivers longlasting durability with compressive strengths between 3,500 and 4,200 psi. No shrinking or cracking when it dries, rather it encompasses the radiant heat tubes and locks them in place during construction.