Safety STI 1100 Pull Station Cover w Horn, Wall Mount, Flush Mount Mounting, Clear 50925K349 Connection 9 16 18 R & L Connection 9 16 18 R & L Body Material Brass Pressure Rating Low Pressure Shape Straight Fitting Type Flange Fitting Connection Slip On Weld Female Pipe Size (A) 8 Pipe Size (B) 8 Flanged Connection Surface (B) Raised Flange OD 13 1 2" For Bolt Diameter 3 4" Bolt Hole Diameter 7 8" Number Of Bolt Holes 8 Bolt Circle Diameter 11 3 4" Pressure Class 150 Material Steel Maximum Pressure @ Temperature 285 psi @ 72° F Maximum Steam Pressure @ Temperature 150 psi @ 300° F Certificate Form Digital Certificate Type Material Certificate with Traceable Lot Number Connects To Pipe Flange Construction One Piece For Fitting Material Iron 105 dB Operating Temperature Minimum 40 Degrees F NEMA Rating NEMA 3R Operating Temperature Maximum 120 Degrees F Water Resistance Water Resistant Includes Batteries Batteries Included Access Style Lift Up Legend IN CASE OF FIRE LIFT COVER ACTIVATE FIRE ALARM Number of Batteries 1 Power Source Battery Includes Alarm Alarm Included Operating Voltage 9V DC Power Source TS Only Battery Country of Origin United States Standards ADA Compliant