Floor mount enclosure with low profile one-door disconnect. 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 on larger models. Removable centerposts for easy panel installation. Concealed, easy-to-remove hinges. Heavy duty latch mechanism operated by zinc die-cast padlocking defeater handle on all doors. Oil-resistant gasket. Master door is far right-hand door on all enclosures. Defeater on master 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. Preferred cut-out on right flange provides mounting for most disconnect switches and circuit breakers.