EIA compliant 19” seismic certified relay rack shall be Hammond Manufacturing, DRZ4 Series, part number DRZ4__ (refer to table) with welded frame assembly. Overall dimensions shall be 22.75” W x __” H x 18” D (refer to table), with a useable rack height of __ rack units (refer to table). Weight capacity shall be UL rated for 2000 lbs static load rating. Dynamic (seismic) suggested load capacity of 800 lbs installed equipment, 50 lbs top cable weight, when secured using C4K-Z4 seismic bolt down kit. Rack rails shall be constructed of 10-gauge steel reinforced with structural angle base. Relay rack rails shall have tapped 10-32 holes front and back in universal EIA spacing. Includes marked rack unit dividers to aid in equipment mounting. Base shall be constructed of 5/16” structural angle iron and include four (4) bolt down holes. Relay rack shall include two (2) pairs of integrated 10-32 grounding studs spaced 5/8” apart, located near the top and lower side of the rack. Relay rack shall be phosphate pre-treated and finished in smooth blank powder coat paint. Open frame rack shall be UL listed in the US and Canada to the UL-2416 (NWIN) Category. Open frame rack shall comply with the requirements towards RoHS EU Directive 2011/65/EU. Open frame rack shall be manufactured by an ISO 9001 registered company.