$10.51 ZN- RES Flush Pendent Sprinkler (SS4421) 4.2K, White - Head only from$42.17 FR-QR Pendent Sprinkler (SS2551), QR, 5.6K, White - Head Only from$12.32 Senju Sprinkler Pressure Gauge 3.5", 300PSI 1/4"NPT (UL/FM) $12.71 ...