Fiberglass U-Channel, Material Fiberglass, Outside Base Width 2 in, Base Thickness 0.125 in, Outside Leg Length 9/16 in, Leg Thickness 0.125 in, Overall Length 5 ft, Standards ASTM E-84, Maximum Temperature 150 Degrees F, Tensile Strength 30,000 psi, Resin Type ISOFR, Shape U-Channel, Color Dark Gray, Length Tolerance +/-0.1875 in, Minimum Temperature -100 Degrees F, Overall Width 2 in, System of Measurement Inch, Width Tolerance +/-0.094 in Resin material is ideal for platforms, walkways, and equipment support. This Dynaform(R) structural support features isophthalic polyester resin formulation (ISOFR) for a low flame-spread rating of 25 or less (when tested according to ASTM E-84).