Quote:
Originally Posted by maui86
It looks like the locking tabs are right there on the edge so I think these would work in confined spaces. With the exception of the oddball bulb these take (H3C????) I'm surprised these aren't sold/used/promoted by anyone except the random Chinese places, and seem to be almost unknown even to most light crazy people like us  - I only found out about them after stumbling upon a random listing on some site 
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Maybe because the bulbs are just too difficult to get??? Lol.