Floor mount enclosure with heavy-duty free-stand disconnect enclosure. It seams 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. Removable centerposts permit easy panel installation. Concealed, easy-to-remove hinges. Heavy-duty 3-point latching mechanism operated by padlocking handle on all doors. Ends of latch rods have rollers for easier door closing. Panel supports. Data pocket is high-impact thermoplastic. Oil-resistant gasket. Master door is far right-hand door on all enclosures. Defeater on primary door requires a screwdriver to open. Mechanical interlock activated by master door prevents slave doors from being opened first; doors can be closed in any order Universal cut-out on right flange provides mounting for most disconnect operators by using operator adapters.