Original window trade vintage catalog for UNIQUE BALANCE COMPANY, INC. Main office and factory was located at 25 Bruckner Boulevard, Bronx, NY. Manufacturers of sash balances for double hung windows. Topics discussed include the differences between springs, other sash balances and the Unique sash balance, how it operates, typical frame details, types of bay and mullion window details, grooving for balances and economical construction details given. Numerous images, illustrations, product details and architect specifications are provided. Unbound from a large 1954 architectural catalog, this unique old eight page technical brochure would display wonderful matted and framed. Nice cover graphics. A fabulous addition to your retro window sash balances library. Pages are detached and may contain a small amount of residual glue on edge.