Difference between DE and Mogul based MH?

[Tangman]

Originally Posted by mark

Other consideration is the reflector height.

When making my canopy was looking for a low profile 250W pendant to fit inside, seemed the DE's where shallower than the SE's

This is true and DE bulbs also run cooler than SE bulbs.

Also some SE end bulbs are specifically designed to run on HQI ballasts or electronic, check the bulb particulars, and will not ware out prematurely