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Hydrofarm:
FLP/FLT Replacement Ballast, 120V.
FMWH7120L is used for (4) 4' bulbs (one ballast on the FLP44/FLP46/FLT44/FLT46 and two on the FLP48/FLT48).
Hawthorne:
Fulham T5 HO Workhorse 5 - 120 Volt
Reliable, high output ballasts. Easy installation. Instant start ballasts. Use shunted sockets. 36 in leads.