"Andrew Gabriel" wrote in message
...
In article ,
Stuart writes:
Can anyone tell me the difference between GU10 and GZ10 Mains Halogen
bulbs . The GU10 are described as aluminium . Is it to do with the
reflector ??

Yes.
GZ10 are dichroic lamps which dump a lot of heat back into the fitting.
GU10 are aluminium reflector lamps which direct more of the heat out
with the light beam.

Even more helpfully, Sainsbury's label them both as dichroic on their
price labels!

Cheapest GU10s I've found is Wickes 5 for £15. Anyone seen cheaper?
Al