as in Illus. 98. Lightly nail a temporary strip (TS) up and down front of pen to hold proper position during building. Turn on side and install hdw. cl., tacking to sides of back as well as to top and floors as shown.
illu12S
Illus. 12S TWO–PEN SOLID FLOOR OBSERVATION UNIT
Hdw. cl. 23 inches wide permits same to reach to front edges of board floors and top, where it may be left to be a part of the doorway. (Or, front edge of hdw. cl. may be turned back, lapped over, to make a double thickness against the inside of the closed door, shown by dotted line, reached by arrows in lower pen, Illus. 12S.) Next, nail door pillars (Dr.Pil.) in place. Remove TS. Then, tack front ends of hdw. cl. to door pillars. Nail the base strips in position as shown in Illus. 12S. If No. 2 hdw. cl. has been used for sides, and if food particles are stored high enough to fall out the sides, a 4x10 strip of fly screen may be dropped down between the hdw. cl. side and the base strip (Bs.St.) which will prevent any such waste of food. Illus. l0S shows front view of, top pen. 2x10 guard boards (GB, Illus. 12S) may be installed as shown in Figs. I, VI, VII and VIII, Chap. 19; or by use of 2 or 3 thin nails or staples shown in Illus. 31. Illus. 11S shows door construction. A 2-inch mending plate is found to be a highly satisfactory door fastener (D.F. in Illus. 10S). All doors should fit as closely as may permit free operation.
At any time desired, part or all of hdw. cl. sides of these pens may be covered on outside with glass or cardboard.
Pens of this construction may be stacked. These pens are not recommended for heavy production, but the plan is offered for use of those who may wish to
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