Top Line Grant 72-138 6' Sliding By-Pass Door Hardware Kit

Top Line Grant 72-138 Sliding Door Hardware Kit Use

Top Line Grant 72-138 sliding door hardware kit is a medium duty by-pass sliding system designed for doors between rooms, closet doors, cabinets, storage walls, and partitions. The kit is built for 1-3/8 inch thick doors weighing up to 150 lbs, so it supports common interior hollow-core or solid-core residential and light commercial doors without overloading the hardware. The 6 foot track length fits many standard openings, giving installers a straightforward option for typical spans. With plus or minus 1/8 inch vertical adjustment and 1-7/8 inch minimum to 2-1/8 inch maximum headroom, the system provides working tolerance for framing variation, which helps align doors cleanly in the finished opening. As a Hettich 72-138 Series product from Hettich America Corporation, this kit sits in their premium line of sliding door hardware, matching the needs of professional-grade sliding applications.

Key Sliding Bypass Hardware Details For Pros

• The 72-138 Series design focuses on medium duty by-pass doors up to 150 lbs, so it suits many residential and light commercial partitions where a sturdy yet not heavy-industrial system is needed.
• Support for 1-3/8 inch thick doors aligns with a common door thickness, letting installers plan around stock doors instead of hunting for special sizes.
• Plus or minus 1/8 inch vertical adjustment allows fine-tuning door height after hanging, which helps straighten reveals and reduce drag at the floor.
• A headroom range from 1-7/8 inch minimum to 2-1/8 inch maximum gives framing flexibility above the opening, useful when retrofitting into existing structures.
• The heavy duty aluminum double I-beam track with jump proof design keeps carriers guided in the track, which helps resist derailment during everyday operation.
• Conformance to ANSI/BHMA standards, Grade 1, indicates the hardware is built for demanding usage cycles, which matters where doors see frequent daily use.

Sliding Door Track And Adjustment Details

The heavy duty aluminum double I-beam track in this kit uses a jump proof design, so the carriers remain engaged in the track even during uneven operation, which reduces callbacks from doors popping out. Pivoting rocker arms maintain track-carrier contact, which helps keep rolling smooth when the header is not perfectly straight. The ball and socket suspension compensates for minor header misalignment, so doors can still hang plumb even when framing is slightly out. Serrations in the apron permit controlled vertical adjustment, translating small wrench movements into predictable height changes for precise alignment. A lock nut on the assembly secures the set position, so door height stays put over time despite vibration and repeated use. The side mount double ball-bearing wheel carrier supports smooth, quiet, long lasting motion, which matters in living spaces, offices, and storage areas where noise and rolling resistance are concerns.

Where This 72-138 Series Sliding Kit Fits

Bypass Doors For Rooms, Closets, And Storage

The Hettich 72-138 Series is described for doors between rooms, closet doors, cabinets, storage walls, and partitions, so it covers many standard interior sliding applications from bedroom closets to utility storage fronts. With support for 1-3/8 inch thick doors, the hardware aligns with typical interior slabs used in those locations, which simplifies door sourcing and job planning. The 150 lb per door weight capacity covers many solid-core interior doors and heavier decorative panels in storage walls, giving flexibility in door material choices. Medium duty by-pass classification matches environments where doors are used regularly but are not exposed to industrial abuse, such as residential units, offices, and light commercial rooms. The 6 foot track length suits many common closet and passage openings, letting installers span standard framed widths with a single track section on this specific kit.

Details That Support Alignment And Reduced Rework

The plus or minus 1/8 inch vertical adjustment built into the system lets installers dial in door height after the track and hangers are mounted, which is important for achieving even gaps and smooth overlapping action between by-pass panels. The headroom window from 1-7/8 inch minimum to 2-1/8 inch maximum offers tolerance above the door, so minor framing deviations or finishing layers can be absorbed without redesigning the opening. Pivoting rocker arms and ball and socket suspension together help the hardware adapt when headers are not perfectly level or straight, which reduces the need to plane doors to chase irregular framing. Serrations in the apron give mechanical grip for small vertical adjustments, so height settings are repeatable side to side when aligning multiple panels. The lock nut securing the position helps prevent hardware creep over time, supporting long-term alignment after job completion. The side mount double ball-bearing wheel carrier produces a smooth, quiet glide and long lasting performance, which reduces follow-up service where occupants notice drag, sticking, or noise along the track.

Practical Questions About This Sliding Door Kit

Selecting This 6 Foot 72-138 Track Kit

This Hettich Top Line Grant 72-138 Series 6 foot sliding by-pass door hardware kit combines a heavy duty aluminum double I-beam track, side mount double ball-bearing carriers, and plus or minus 1/8 inch vertical adjustment to support accurate door alignment on 1-3/8 inch thick, 150 lb doors. For openings between rooms, closets, cabinets, storage walls, or partitions that fall within the 6 foot span and 1-7/8 inch to 2-1/8 inch headroom range, this ANSI/BHMA Grade 1 system from Wurth Baer Supply offers a defined, medium duty solution ready for precise sliding door layouts.