Top Line Grant 72-138 5' Sliding By-Pass Door Hardware Kit

Top Line Grant 72-138 Hardware Kit For Sliding Doors

Top Line Grant 72-138 hardware kit is a medium duty by-pass sliding door hardware set designed for 1-3/8 inch thick doors weighing up to 150 lbs, so it supports standard interior doors in residential and light commercial projects. This Hettich 72-138 Series kit uses a heavy duty aluminum double I-beam track with a jump proof design, which keeps the door carriers engaged in the track to help prevent derailment during everyday use. The system provides plus or minus 1/8 inch vertical adjustment, allowing minor height changes so doors can be aligned to finished flooring and trim conditions. Headroom from 1-7/8 inch minimum to 2-1/8 inch maximum keeps the track compact above the opening, which is useful where ceiling height or framing space is tight. As part of Hettich America Corporation's sliding door hardware line, this 72-138 Series is suitable for by-pass layouts between rooms, closets, cabinets, storage walls, and partitions.

Key Sliding Door Hardware Details For Pros

• The 72-138 Series is a premium line of medium duty by-pass door sliding hardware, so it is intended for doors that see regular operation without moving into heavy industrial duty.
• Applications include doors between rooms, closet doors, cabinets, storage walls, and partitions, which gives flexibility to use one hardware family across multiple opening types on a project.
• The kit is designed for 1-3/8 inch thick doors weighing up to 150 lbs, so it matches common interior door thickness and weight without requiring upsizing to heavier track systems.
• Headroom of 1-7/8 inch minimum to 2-1/8 inch maximum lets the track sit close to the header, which helps maintain clean sightlines and fits many standard framing details.
• The heavy duty aluminum double I-beam track has a jump proof design, which helps keep carriers in the track during operation and reduces the chance of door derailment.
• Conformance to ANSI/BHMA standards, Grade 1, indicates the hardware meets a recognized performance level for sliding door systems in typical architectural applications.

Sliding Track, Mounting, And Adjustment Details

The 72-138 sliding by-pass door hardware uses side mount double ball-bearing wheel carriers, which support the door from the track while providing a smooth, quiet running surface during opening and closing. Each carrier is connected through a ball and socket suspension that compensates for minor header misalignment, so the system can tolerate small variations in framing while still tracking properly. Pivoting rocker arms maintain track-carrier contact, which helps distribute load consistently and supports stable door movement. Serrations in the apron permit vertical adjustment within the plus or minus 1/8 inch range, allowing precise door height tuning after the doors are hung. A lock nut guarantees permanent positioning once the vertical adjustment is set, so door alignment remains stable over time instead of drifting during use.

Using This Sliding Door Hardware Kit In Projects

Where This 72-138 Sliding Bypass Hardware Fits

The Hettich 72-138 Series is described as a premium line of medium duty by-pass door sliding hardware, positioning it for openings that benefit from smooth operation without the demands of very heavy panels. Applications include doors between rooms, which lets the hardware serve as a space-saving alternative to swinging doors across interior transitions. Closet doors are supported by the same 1-3/8 inch thick, 150 lb capacity rating, giving enough strength for typical wardrobe or storage door leaves. The kit also suits cabinets, storage walls, and partitions, so one hardware type can be specified across built-in casework and larger room-dividing elements. Available complete hardware kits use tracks in 48 inch, 72 inch, and 96 inch lengths, which aligns with common opening widths and allows appropriate track sizing for single or multiple by-pass panels.

Details That Support Alignment And Repeatable Results

The heavy duty aluminum double I-beam track used in this 72-138 sliding system provides a rigid guide for the carriers, which helps maintain straight travel and reduces flex over the span of the opening. Its jump proof design keeps carriers captured, supporting consistent door tracking over repeated cycles. Side mount double ball-bearing wheel carriers support smooth, quiet, and long lasting performance, reducing rolling resistance and sound as doors travel. The ball and socket suspension compensates for minor header misalignment, which is useful when framing is slightly out of level yet the installer still needs smooth sliding action. Pivoting rocker arms help maintain positive track-carrier contact, which stabilizes the hanging point of the door during movement. Serrations in the apron allow small vertical adjustments, and once that height is set, the lock nut guarantees permanent positioning for repeatable door alignment. The system conforms to ANSI/BHMA standards, Grade 1, so its performance characteristics are aligned with recognized criteria for sliding hardware in architectural use. The kit is made in the USA as part of Hettich America Corporation's product offering, which supports sourcing preferences that prioritize domestic manufacturing on projects.

Common Questions About 72-138 Sliding Door Hardware

Selecting This 72-138 Kit For Your Next Opening

This Top Line Grant 72-138 hardware kit from Hettich America Corporation brings together a heavy duty aluminum double I-beam track, side mount double ball-bearing carriers, and plus or minus 1/8 inch vertical adjustment for by-pass door layouts. Its 1-3/8 inch door thickness design, 150 lb per door capacity, and 1-7/8 to 2-1/8 inch headroom range align with many interior doors between rooms, closets, cabinets, storage walls, and partitions. When a medium duty, ANSI/BHMA Grade 1 sliding door system is needed with smooth, quiet performance and stable alignment, this 72-138 sliding by-pass door hardware kit offers a coordinated solution ready for specification.