How To Retrofit A Sylvania 2X4 Troffer

If you have an old building, you may have Sylvania 2X4 troffers that are outdated and not energy efficient. Fortunately, there are kits that can allow you to retrofit your troffers. The troffers are ideal for illuminating commercial settings, schools, offices, and retail settings. Retrofitting is a great idea because it can lead to a business experiencing as much as 50% in energy savings. 


Kits are a great option if you wish to retrofit the troffers yourself because they allow you to save time since they are ready to go. You're able to upgrade quickly without needing to change the already-existing fixture mounting. 

Selecting a Kit

When selecting a kit, make sure to choose troffers that are suitable for the temperatures that they will be subjected to. Also, take into consideration the dampness of your business. There are some troffers that are more damp-resistant than others. 

Safety Precautions

When drilling to install a retrofit kit, be careful with where you drill. For example, there is enclosed wiring and components that you might drill through accidentally. The input rating of the retrofit kit should not exceed the input rating of luminaire. If there are any open holes, do not alter them as you are installing the retrofit kit. 

When wiring the troffer, do not expose the wires to the edges of the sheet metal. There's a risk that you might cut the wires and create the conditions for a potential fire. Instead, use the proper connectors to protect your wires. 

Installing the Kit

Begin the retrofit by removing any existing lamps, the reflector, and the cover. If a door frame is in the way, remove this as well. You may need to remove the ballast so that you have enough space. Then, you'll want to lift the housing and slide the side brackets in between the housing and the rest of the brackets. 

Hang the body by hooking the T-hinges into the correct mounting brackets. Attach the safety cables using self-tapping hex screws. Then, you'll want to connect the retrofit to the AC power. There is usually a black wire line that is inserted into the LED quick connector. The neutral wire is inserted into the unmarked port, and the power supply is connected to the retrofit kit. The retrofit's green wire is connected to the fixture's green wire. In some cases, the power supply doesn't have a ground wire, and the ground wire needs to be attached directly to the housing.