Tyco® TY2131, Model TY-FRB, 4.2K, Upright, QR, 1/2" NPT, White, 175 Degree, 57-340-4-175, Fire Sprinkler Head GD7 They are standard response spray

They are standard response spray sprinklers which produce a hemispheri-cal water distribution pattern below the deflector

Maximum Operating Current:  250 mA

unique all-metal drive train for consistent operating characteristics

Manufacturer Part Numbers:  15209W/R

Wrench for use with RASCO/Reliable fire sprinkler models: Plastic limited-use wrench for spare sprinkler cabinet - RFC without cap

Tyco® TY2131, Model TY-FRB, 4.2K, Upright, QR, 1/2" NPT, White, 175 Degree, 57-340-4-175, Fire Sprinkler Head GD7 They are standard response sprayThe TYCO Series TY FRB 4. 2 K factor, Upright Sprinklers described in herein are quick response, standard coverage, decorative 3 mm glass bulb type spray sprinklers. They are designed for use in light or ordinary hazard, commercial occupancies such as banks, hotels, and shopping malls. Item: Tyco TY2131, Model TY FRB, 4. 2K, Upright, QR, 1 2" NPT, White, 175 Degree, 57 340 4 175, Fire Sprinkler Head Available In Multiple Colors and Temperatures. See