R4 Series 45 RU Rack. EIA compliant 19 inch four post open frame rack shall be Middle Atlantic Products model R4CN-4536B. Overall dimensions of rack shall be 84.22 H x 21-1/4 W x 48 inch D with 45 useable rack spaces. Rack shall ship unassembled. Rack shall provide a static load capacity of 2000 lbs. and a UL listed load capacity of 800 lbs. Rack shall accept equipment mounting using cage nut style hardware. Rack rail shall be 14-gauge steel. Top, middle and bottom side brackets shall be 16-gauge steel. Base angles shall be 14-gauge steel and shall mount outward for increased stability or inward to conserve floor space. Weight capacity shall be 1000 lbs. Rack shall be finished in a durable black powder coat. Open top shall accept mounting of optional cable ladder. Rack shall feature zero-U mounting capabilities for optional cable lacing strips, vertical power strips and cable ducts. R4 rack shall be UL listed in the US and Canada. R4 shall be GREENGUARD Indoor Air Quality Certified for Children and Schools. R4 rack shall be RoHS EU Directive 2002/95/EC compliant. R4 shall be manufactured by an ISO 9001 and ISO 14001 registered company. Four post open frame rack shall be warrantied to be free from defects in material or workmanship under normal use and conditions for the lifetime of the product.