Halco T8EM-48FR17-40BYP-LED-2PK 4 Foot ProLED Emergency Type B T8 Tube 17W 2100Lm 4000K Emergency Battery Back Up 400Lm 2-Pack (82373) backorder47 Fulham Workhorse Instant Start Electronic

Fulham Workhorse Instant Start Electronic Fluorescent Ballast For (1) F21T5 Lamp 120V #ANSI C82

Efficacy: 125 LPW

CCT Selectable: 3000K / 4000K / 5000K at 90+ CRI

Philips 313585 MH175/U/M 175W BD17 Probe Start Metal Halide 4000K Medium E26 Base Clear Bulb M57/E (928601122311)

in Navajo Sand

Halco T8EM-48FR17-40BYP-LED-2PK 4 Foot ProLED Emergency Type B T8 Tube 17W 2100Lm 4000K Emergency Battery Back Up 400Lm 2-Pack (82373) backorder47 Fulham Workhorse Instant Start ElectronicHalco T8EM 48FR17 40BYP LED 2PK 4 Foot ProLED Emergency Type B T8 Tube 17W 2100Lm 4000K Emergency Battery Back Up 400Lm 2 Pack (82373) The Halco Emergency T8 is a 4FT Type B (Ballast Bypass) T8 with a built in back up lithium battery. The Emergency T8 provides the simplest, and most hassle free way to meet safety lighting standards without the expense of separate emergency fixture.