Ballasts & Drivers from Keystone, $50 - $100, where Input Volts is 277V, and Length is 5" - under 10"

Keystone T5HO Electronic Ballast, 120-277V For (2) F39T5HO Lamps

SKU: KTEB-239HO-UV-PS-SL | Ordering Code: KTEB-239HO-UV-PS-SL

• 1-1.3 Ballast Factor
• 1/2 Lamps
• 120/277 Volts
• 1" High
• 9.5" Long
• 1.3" Wide
• More details

Keystone Parallel Wire Electronic Sign Ballast, 120-277 Volt for 1 or 2 F96T12/HO, F72T8/HO lamps

SKU: KTSB-E-0216-12-UV | Ordering Code: KTSB-E-0216-12-UV

• 120/277 Volts
• 1.7" High
• 9.5" Long
• 2.4" Wide
• More details