Keystone Ballast KTEB-432RIS-1-TP-SL replaces the older version of the KTEB-432RIS-1-TP and operates 3 or 4x F17T8, F25T8, F32T8 | 120V | NPF | Instant Start Ballast| Primary Lamp Type: F32T8 (32W)| Primary No. of Lamps: 4 |Input Voltage: 120| Starting Method: Instant Start| Power Factor: Normal| Warranty: 3 Years