Specifications include, but are not limited to: At a minimum the National Emergency Management Association (NEMA) https://www.nema.org/Standards/About-Standards/pages/default.aspx P44 traffic controller cabinet must consist of the following: ⅛”thick aluminum type 5052-H32 that conforms to ASTM B209 https://www.astm.org/. Natural anodized finish. Dimensions (rounded to the nearest inch): Dimensions Door Opening Pad Mounting Pattern Height Width Depth Height Width Width Depth 55” 44” 26” 49” 41 ¾” 40 ⅝” 18 ½” Full size front door with door stops on the bottom of the door. Underwriters Laboratory (UL) https://www.ul.com/ continuous welds. ¾” round, stainless steel handles with padlock feature. Three (3) point Corbin #1548-1 Best door lock or equal. Base/pad/ground mounting type. Two (2) adjustable shelfs. Four (4) mounting channels on the side and rear walls for positioning of shelfs. Double flanged door frame. Barrier type terminals. Louvered screened air intake in front door with filter. Stainless steel external hardware. Main door stainless steel piano hinge secured with stainless steel carriage bolts with nylock nuts. Internal stainless steel or cadmium plated, Type II, Class I or equal hardware. Neoprene sealed doors.