Fully welded construction, solid sides * 2,500 lb. weight capacity * UL Listed in the US and Canada * Seismic rated (UBC Zone 4) for protecting 500 lbs. of essential equipment when used in conjunction with our ERK-Z4 brackets * 16-gauge steel tops, bottoms, & sides * Laser-cut 1/8" thick internal steel braces for strength * 1 pair fully-adjustable front rackrail * Large cable entry in bottom * Grounding and bonding stud installed in base * Configurable top (44, 40, 35 sp.), solid top with fan KO’s (27, 18 sp.) * Laser KO’s in side panels for cable pass-through (44, 40, 35 sp. only) * Finished in a durable black textured powder coat