They fit perfectly on my LANGRIA shelves. My shelves have been flipped at least 3 times and I didn't want to throw them away as the connectors were the main issue. The original connectors cracked, stretched and no longer made a "click" sound. These connectors fit snugly and now my shelves are very strong. I would say 1 or 2 clear casements couldn't fit perfectly as they were too tight but they still worked.
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