J-Strap Black Double Bypass Barn Door Hardware Kit

Total system weight capacity: 220 lbs combined across all doors.

Door thickness: 1-3/8 in to 2 in. The wider thickness range — up to 2 in — is one of the advantages of the adjustable double bypass bracket over single bypass configurations.

Ceiling clearance above door: 8 in required. In a double bypass system, the bracket holding the outer track must arch up and over the rollers of the inner track so both systems don't interfere. That bracket height above the inner track's rollers is what requires more ceiling clearance than a single track installation.

Door gap when closed: A minimum 2 in gap between doors is recommended when closed. There is no mandatory overlap — the doors sit on separate tracks and can be positioned independently.

Wall header: A solid header above the opening is required for track mounting. If there is no existing header or backing in the wall, we recommend installing a minimum 1×6 hardwood board (3/4 in thick × 5-1/2 in wide) that extends past the length of the track to the next stud or structural support point on each side. No solid header and cannot install one? See ceiling mount hardware.

Door width: Each door must cover roughly half the opening, plus the chosen wall overlap on the outer edge, plus the planned overlap between the two doors at center. For standard rooms plan for 2 in of wall overlap on the outer edge; for bedrooms and bathrooms, 3 in gives better privacy. See our measuring guide for full door sizing formulas.

Door height: Measure from finished floor to the top of the rough opening and add 1 in. The extra inch covers the top of the opening while leaving 1/2 to 1 in of clearance at the bottom for the door to slide without dragging. If you have thick carpet, check that clearance is adequate along the full travel path before ordering.

Track length: Depends on whether you need pass-through access or a fully clear opening — see the track length section below.

Brand: House value line — ships from stock in 2–3 business days

Finish: Black

Track dimensions: 1-1/2 in wide × 1/4 in thick flat track

Wheels: Nylon — quiet, smooth operation. Steel wheel upgrade available — louder but compatible.

Total system weight capacity: 220 lbs (all doors combined)

Door thickness: 1-3/8 in to 2 in

Ceiling clearance: 8 in above door

Configurations: 2, 3, or 4 doors on two tracks

Finishes available: Black, brushed nickel

Soft close: Available — sold separately at this link. One unit covers one door; purchase two for a 2-door setup.

Handles: Not included — order separately from our handles collection

For sizing guidance see our measuring guide and track length guide.

Hanger/Roller Set (base 2-door kit):

• 4 J-strap hanger/rollers (2 per door)
• Hex bolt (8), acorn nut (8), washer (16)
• 4 anti-jump pads
• 2 floor guides (1 per door) — floor-mounted T guide style
• 4 door stoppers
• 2 hex wrenches
• 8 rubber hole covers (2 for each track end)

Double Bypass Bracket Set:

• 2 brackets — connect the two tracks at adjustable depth; pull out to set your desired gap between outer and inner door during installation
• Long lag bolt (1), short lag bolt (1)
• Bracket connector (2), track connector (1)

Shared: Flat track · junction plate if needed (check hardware checklist for your track length) · spacers, lag bolts, and washers (quantities vary by track length — correct quantities included based on your selection)

Handles, a latch, and soft close are not included — add them before checkout to avoid a second shipment.

The included floor guide is floor-mounted. A wall-mounted floor guide is an option for fully clear opening setups — however, fully clear openings are difficult without the telescoping effect because floor guides can lose engagement as the doors travel. For fully clear openings we recommend our continuous floor guide as the most reliable solution.

3-door configuration: Add an additional standard roller set. The additional set includes the same hardware as the standard hanger/roller set described above.

4-door configuration: Double the standard hanger/roller set hardware of the 2-door kit.

Configuring 3 or 4 doors? Email us at info@thebarndoorhardwarestore.com before ordering to confirm the right track length.

Hardware kits don't include handles, a latch, or soft close — plan for these before checkout to avoid a second shipment:

Handle: For the room-facing side of each door — browse our handles collection

Flush pull: For the wall-facing side if doors are operated from both sides — browse our flush pulls collection

Latch: Keeps the door closed deliberately — browse our latches collection

Soft close: One unit per door — shop soft close. Purchase two for a 2-door setup.

Steel wheels: Bypass doors should stay under 110 lbs so nylon wheels are usually sufficient. If you prefer the look of metal wheels, steel wheels are compatible — note they are louder than nylon. Shop steel wheels

Double bypass track length follows the same logic as single bypass — it depends on whether you need pass-through access or a fully clear opening. Both tracks in a double bypass system are the same length.

Pass-through (partial access): Slide one door to one side for access to roughly half the opening. The track must be at least the opening width plus the planned door overhang outside the opening on each side. For example: if your opening is 60 in and you want the doors to overhang 2 in past each edge, you need at least a 64 in track — round up to the nearest available length, in this case 5 ft 6 in (66 in).

Clear opening (fully unobstructed): Both doors retract completely. Measure the door panel width, not the rough opening:

2 doors: 3× door width — e.g. two 36 in doors → 9 ft track minimum

3 doors: 5× door width — e.g. three 36 in doors → 15 ft track minimum

4 doors: 6× door width — e.g. four 36 in doors → 18 ft track minimum

Tracks over 7 ft 6 in ship in multiple pieces with a junction plate included. House value line hardware is available in the listed track lengths only. For a custom track length, the Goldberg Brothers double bypass kit can be made to any length — email us at info@thebarndoorhardwarestore.com to get a quote.