150 Watt S55 High Pressure Sodium Quad Tap Ballast Kit No USPS Keystone HPS-35R-1-KIT

Keystone HPS-35R-1-KIT

this ANSI Type M98/O light bulb is a reliable choice

EPA's Toxic Characteristic Leaching Procedure (TCLP) test

Sylvania Ballast LU50/120R

150 Watt S55 High Pressure Sodium Quad Tap Ballast Kit No USPS Keystone HPS-35R-1-KITHPS Ballast Cross Reference: Advance Ballast 71A8172 001D Sylvania Ballast LU150 MULTI KIT Keystone HPS 150X Q Venture V90D1435K Sola E SZA00W150 High Intensity Discharge (HID) lamps require a ballast to apply starting voltage to the lamp and establish current flow an arc between the lamp electrodes. Without a ballast, the arc will extinguish or draw increasing current until some circuit element burns up. Ballasts provide system stability by limiting