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Top Line Grant 1230 door hardware set is designed for moving heavy panels, space dividers, or large doors, so it supports demanding interior layouts where wide openings must stay easy to operate. The set is specified for doors up to 325 lbs, which lets you hang substantial wood or composite panels without resorting to multi-panel workarounds. A minimum door thickness of 1 inch keeps the system matched to robust doors that resist flexing under load. Carriers mount to the top of the door, leaving the floor clear where continuous flooring, thresholds, or carts need unobstructed travel. A four wheel carrier with a center hung design balances the door weight over the track, which helps the panel run smoothly without dragging on one edge. High quality precision ball-bearing wheels further reduce rolling resistance, so even heavy doors can be moved with controlled effort across the full opening.
Carriers mounted to the top of the door tie the system directly into the door edge, which streamlines layout work because the hardware is referenced from the top line of the panel. The four wheel center hung carrier positions the door directly under the track, so the revealed gap on each side of the opening can be set more consistently. A specified headroom range from 3 1/4 inches minimum to 3 3/4 inches maximum defines the vertical space between the structural support and the top of the door, which guides how the opening is framed or how finishing trims are sized. The aluminum I-beam track, sold separately, provides a defined running surface sized for the ball-bearing wheels, which supports reliable engagement of the carriers over the full travel.
This sliding door hardware for heavy panels is intended for situations where interior spaces need to be divided with large, movable elements rather than permanent walls. Its suitability for doors up to 325 lbs supports wide, tall, or dense panels that help visually separate work zones. The minimum 1 inch door thickness works well with substantial wood or composite constructions, which are common in commercial fit-outs and higher end residential openings. Because the carriers mount to the top of the door and run on an aluminum I-beam track, sold separately, the floor under the opening can remain continuous, helping maintain an unbroken walking surface between zones. The center hung carrier configuration also helps panels stay visually aligned within the opening, which is important when doors are part of a finished wall line.
The four wheel carrier design shares the door load across multiple ball-bearing wheels, which reduces point loading on the aluminum I-beam track and supports repeatable motion over time. Precision ball-bearing wheels convert the door weight into smoother rolling, so panels up to the rated 325 lbs can be moved with measured effort rather than abrupt starts and stops. Carriers mounted at the top keep the guiding elements above eye level, which limits interference with floor-level finishes and simplifies cleaning around the opening. The specified headroom range of 3 1/4 inches to 3 3/4 inches gives a clear target for layout, so framing, track position, and door height can be coordinated to achieve the required clearance above the door edge. Meeting or exceeding ANSI/BHMA standards indicates that the hardware has been evaluated against recognized performance criteria, which aligns this set with the expectations often applied in commercial or high-use installations.
The Top Line Grant 1230 door hardware set is rated for doors up to 325 lbs, which suits large or dense panels where higher load capacity is required.
This sliding door hardware is designed for doors with a minimum thickness of 1 inch, aligning the carriers with sturdy door constructions.
For this system, the carriers are mounted to the top of the door, which keeps the floor area clear beneath the panel.
The precision ball-bearing wheels run on a heavy duty aluminum I-beam track, sold separately, giving them a defined running surface.
This hardware set specifies headroom from 3 1/4 inches minimum to 3 3/4 inches maximum, guiding the vertical space above the door.
This hardware meeting or exceeding ANSI/BHMA standards indicates it aligns with recognized performance benchmarks for sliding door systems.
The Top Line Grant 1230 door hardware set from Hettich America Corporation brings a defined load rating, headroom range, and carrier design to sliding installations that must handle doors up to 325 lbs. Its center hung, four wheel carriers with precision ball-bearing wheels are paired with a heavy duty aluminum I-beam track, sold separately, to support consistent door travel. For projects where heavy panels, space dividers, or large doors are part of the layout, this hardware set provides a focused option built around those demands.
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