The J top mount 8-door biparting bifold kit folds eight panels accordion-style along a wall-mounted track, with four panels folding and stacking to each side of the opening — with no hardware visible on any door face. The J top mount roller attaches to the top edge of each panel, keeping all door faces completely clear while the J-style roller arm remains visible above, maintaining the barn door aesthetic from the side. For a fully clear opening, only 10 in of clear wall is needed on each side.
J top mount is the only compatible hanger style for 8-door biparting. Each side stacks four panels — the same as a 4-door one-way configuration — and J-strap hardware mounts to the door face, which obstructs the panels from folding tightly and can scratch adjacent panels in a four-panel stack. J top mount keeps all door faces clear for a clean, tight stack on both sides.
This is a Goldberg Brothers standard duty kit, made to order in Colorado with a limited lifetime warranty. Available in all 17 Goldberg Brothers powder coat finishes. Two 4 in pull handles are included — one on the outermost panel of each side. Ships in 10–15 business days. Total system weight capacity is 500 lbs across all eight panels. For heavier or thicker panels, see our heavy duty 8-door biparting hardware.
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