this v like structure composed of the locked together upper and lower doors can then be rotated upward to a stable triangular or inverted v like position atop the roof or top panel of the cabinet application_number US 4787579 A description fig1 shows the compressor end of a channel mounted refrigeration condensing unit the control panel 10 is mounted at one end of the channel 6 and is supported additionally by cross rail 8 access to control panel 10 is gained by doors 12 and 14 which are hinged at their outer edges the compressor enclosure 1 has a top 18 on which cleats 19 are mounted and at least one set of horizontally hinged side doors 2 and 4 upper door 2 has a height h u lower door has a height h l h l can be longer then equal to or shorter than h u a wire bail 20 is swingably connected to upper door 2 and provided with a bent portion to engage mating hole 21 in lower door 4 under the proper circumstances which will be further set forth fig2 which has parts 2a 2b and 2c shows the doors 2 and 4 of fig1 in end elevation the upper door 2 with its horizontal hinge 24 providing rotatable connection to the stationary top section 18 and the lower door 4 rotatably connected by way of hinge 22 to the lower edge of.