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alarm signals Asphalt Authorities having jurisdiction buttweld calcium chloride Calif cast on body Chicago circuit Class Classification control panel Control panel—Label Corp cylinders devices discharge dry pipe valve Electric Elkhart eral Fire Extinguisher evidence of inspection exceeding factories by Underwriters fire alarm box Fire Door fire test Firecraft flanged gate valve Grinnell hardware Hollow-Metal incl Inspection Service installed Label Service Labora Laboratories lb per sq Magneto manually operated manufacturer Marking Metal Model designation name plate nozzle Ohio openings in vertical over-all width pattern Products pull boxes pump Pyrene R. I. Gen Rate of Foam Reexamination Service release Rockwood roof coverings sash serves as evidence Service of Underwriters Sheet-Metal signifies compliance sizes sliding sprinkler equipment standard standpipe steel submitted for labeling supervisory tank temperature thermostats Tin-clad tion tories Toronto transmitter tubing Type designation unit unit—Label upright or pendent vertical shafts warp threads York Youngstown