Fig. 430.—Windows in second box opened.
Fig. 431.—Door in right-hand wall of second box.
In the third box ([Fig. 426]) cut a large window through the back wall four and one-half inches high and three and one-fourth inches wide. [Fig. 433] shows this window in detail with one shutter open and one closed.
Fig. 432.—Door opened.
Excellent
Window Glass Can Be Made