KTEB-2C72-1-TP-WS Electronic circline ballast from Keystone Technologies. Drives (2) lamps; (1) 8" 22W FC8T9 & (1) 12" 32W FC12T9 OR (1) 12" 32W FC12T9 and (1) 16" 40W FC16T9. Includes prewired sockets. Carries a 3 year manufacturer warranty. Suitable replacement for: Hubbell EB-2C72-1-TP-WS Advance RS-22-32-TP-W