Sweet’s indexed catalogue of building construction for the year 1906 (1906)
New York : Chicago : Architectural Record · leaf 472
ngersweigh 10 pounds per set; track 2 pounds per foot. The No. 17 Richards Standard Trolley Roller-Bearing Barn Door Hanger (Fig.4) is suitable for doors weighing 400 pounds or less. The pendants are 6 inches long,4 inches wide and ^^10 inch thick. The hanger is used regularly with No. 31 track.The…
Building materials
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