ED28 bulbs are larger envelope, high-output lamps used to replace medium-wattage HID sources.

In high-bays, roadway/post-top fixtures, area lights, and large indoor/outdoor luminaires.

Often E39/E40 mogul; verify fixture socket and clearance due to the larger bulb size.

Commonly 5000–12,000 lumens, depending on wattage and design.

Some support 0–10V dimming; many retrofits are non-dimmable. Always check compatibility.

Many do. Confirm if your model is ballast-bypass or ballast-compatible before installation.

3000K–5000K, with 4000K and 5000K popular for task and exterior visibility.

Only if the lamp is rated for enclosed use; heat must be managed properly.

Yes—use wet-rated models and ensure voltage/temperature specs match site needs.

We help select the right lumen package, base, and wiring method for reliable HID retrofits.