FR-QR Horizontal Sidewall Sprinkler (SS2553) 162°F, QR, 5.6K, White - Head OnlyPart #
Approvals UL, FM
K-Factor 5.6 (80.6)
Thread Size 1/2” NPT
Maximum Working Pressure 175psi (12.1 bar)
Temperature Rating 162°F/72°C
Overall Length 2-37/64" (65.4mm)
1/2 inch (12.7mm) with D1 Recessed Escutcheon*, or
3/4 inch (19.1mm) with D2 Recessed Escutcheon (approved by UL only).
*Due to FM Approval Standard 3.2.13 by Class Number 2000, use in combination with a sprinkler head rated higher than 255°F is not approved by FM.
- Designed for use in light and ordinary hazard commercial occupancy
- Laser etched lot on frame
- Solder link type makes it more durable than glass bulb sprinklers
WARNING: Cancer and Reproductive Harm www.P65Warnings.ca.gov