POLY-SAFETYPACK® CASTER FRAME Moving your Poly-Safetypack is a breeze with our Caster Frame assembly. For use with Product Nos. 2038-YE, 2038-YE-D, 2077-YE, 2077-YE-D. Poly-SafetyPack Caster Frame Product No. 2200-BK Exterior Dimensions 40"l x 22"w x 8"h 102 cm x 56 cm x 20 cm Interior Dimensions 40"l x 22"w x 8"h 101 cm x 56 cm x 20 cm Weight 37 lbs./17 kg Load Bearing Capacity UDL 1600 lbs./725.76 kg