Unit shall be one 20-gauge top work surface, measuring 37""W x 22-1/2""D. Shelf shall be press formed so that a 1/8"" lip borders the top surface on all four sides. Work surface shall be divided into two parts: a 17-1/2"" writing surface and a 17-1/2"" adjustable projector shelf. Cart has four 14-gauge steel legs, 20-1/4"" in length, welded to the work surface at each corner. Each leg shall have four, 1/4"" diameter holes down the center so it accepts a 1/4"" 20 machine screw. The holes shall be spaced 2"" apart to permit table adjustments of 27"", 29"", 31"", 33"", 35"", 37"", 39"" and 41"" in height. Table shall have one 20-gauge steel, 36""W x 18""H modesty panel that is attached between the rear legs. Cart shall have one 14-gauge steel, welded""H"" frame assembly. Four 14-gauge steel legs, 19"" in length, shall be welded to the""H"" frame. Each leg shall have one, 1/4"" diameter hole spaced 2"" from the top and in the center so it allows eight height adjustments (as noted above). Arc welded caster socket with a hard plastic caster insert shall be secured to the legs. Casters shall be mar-resistant, black hard rubber and are 4"" in diameter. Each caster assembly shall have ball bearing swivel capabilities and steel construction. Two shall have locking brakes. Adjustable projector shelf can be lowered in 1/2"" increments from 5"", 5-1/2"", 6"", 6-1/2"", 7"", 7-1/2"", 8"", 8-1/2"", 9"", 9-1/2"", 10"", 10-1/2"" and 11"" positions that will accommodate different sizes of overhead projector models. Projector shelf shall be fastened to the top shelf on three sides: at the back, outside of shelf on right, and to the writing surface on the left side. Model AOH2741-E4 shall have an electrical assembly that is completely enclosed with two grounded outlets, 20' 3-wire cord and two 3/16"" diameter machine screws with wing nuts for attaching unit to the table. Electrical assembly shall be C-UL and UL listed when attached to the cart.