Original vintage window catalog UNIQUE BALANCE COMPANY sash balances for double hung windows. 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 balnances and specs, economical construction details given. Main office located at 25 Bruckner Boulevard, Bronx, New York City, NY. This old eight page 1954 architectural technical specifications brochure would make a marvelous addition to your engineering library. Pages are loose and contain a small amount of residual glue on edge.
- SKU zg675
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