Wow, I searched high and low and saw nothing like that. Very cool. I would guess they would work for a fuge. It is on it's way south for a transplant now. Very excited and appreciative of Dantimdad for offering up his expertise. This is one great forum!This is a GY10Q-4 base bulb. There are replacements available. For example,
https://www.amazon.com/LED-Replacement-Traditional-Fluorescent-4500-5500k/dp/B01LY95CHZ