1-lamp 277V <10%THD programmed:CODE SYL-50900 Product Code: SYL-50900Price: Check Latest1-lamp 277V <10%THD programmed rapid start normal power factor electronic ballast in an F enclosure size for 28W T5 lamp QTP1X28T5/277PSN F Details description: Average Rated Life (hr): 4000 Base: GU4 Bipin Beam Angle (deg): 35 Beam Type: FL Bulb: MR11 Centerbeam Candlepower (cp): 700 Class C: (gas) Color Rendering Index (CRI): 100 Color Temperature/CCT (K): 3000 Diameter (in): 1.375 Diameter (mm): 34.925 Ecologic: YES Family Brand Name: TRU-AIM Standard Filament: AXIAL Horizontal Beam Angle (deg): 35 Lamp Finish: Covered Maximum Overall Length - MOL (in): 1.625 Maximum Overall Length - MOL (mm): 41.275 Nominal Voltage (V): 12.00 Nominal Wattage (W): 20.00 Vertical Beam Angle (deg): 35