This is a spring-loaded 3/4 in. diameter nylon roller guide in a steel nail down base. The base is 3/8 in. with two nail down tabs on either side. It mounts on the top edge of a bi-fold door that is 1 in. to 1-3/8 in. thick and can hold up to 30 lbs. maximum.Find the GUIDE TOP PIVOT F/BIFOLD at Ace.
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