Enclosure without panel, 0.121 inch steel. Seams are continuously welded and ground smooth. Body stiffeners in larger enclosures for extra rigidity. Body flange trough excludes liquids and contaminants. Heavy-duty lifting eyes anchor into reinforced top. Concealed, easy-to-remove hinges. Heavy-duty 3-point latching mechanism operated by padlocking handle on all doors. Rollers on ends of latch rods for easier door closing. Data pocket is high-impact thermoplastic. Oil-resistant door gasket. Panel supports. Removable 0.127 inch thick steel panels mount on collar studs. Bonding provision on door. Mechanical interlock standard on each enclosure; parts required to connect interlock system between adjacent enclosures are provided. Interlock rods are furnished with enclosures; gasket kits and end plate purchased separately. Models available with panel include painted panel; conductive panel sold separately. ANSI 61 grey finish inside and outside over pre-treated surfaces. Panels have white or conductive finish. Flat end plates are ANSI 61 grey inside and outside.