Quote Originally Posted by timbuck3
its a straight up ( bulb....not horizontal.
Horizontal reflectors are better at shedding heat than the vertical 'china hat' type and also make the light pattern better fit rectangular spaces. The hat types do trap a lot of heat under the reflector... and they run the tube socket fairly hot as well compared to other types.

You can make your own horizontal batwing reflector if you're crafty in the workshop.