Price and delivery time were the main factors in this purchase. the delivery was on time and the price per glass is good, hence 5 stars to the seller. My criticism of glasses is as follows. The "neck" that connects the junction box to the box is attached to the box with small aluminum rivets. After installing them on the second floor, I went to the attic and was surprised to see so much light entering the "sealed" IC. cans. It appears when the electricians installed them through a cut-out in the ceiling, many of the rivets were broken. This doesn't change the function of the block as there is another mechanical linkage connecting the neck to the can. But this happens to destroy the airtight aspect I was expecting. I can't decide whether to blow foam on them or use proper tape (not duck tape) to seal the hole before covering them with insulation.
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