01
The lowest-rated component sets the limit
Top plates, bolts, clamps, or inserts must suit the slab material without crushing or pulling out.
Wheel assemblies must match the track profile, adjustment range, and load.
The rail resists deflection while stops absorb opening and closing impacts.
Track support, frame, anchors, and header connection transfer load into the building.
Guides, soft-close, synchronizers, and latches must suit thickness, size, and momentum.
A roller-pair rating does not make every other part suitable for that load. Confirm the complete system and all added accessories.
02
Calculate the completed door weight
Use the door manufacturer's documented weight when available. For custom work, assemble a weight schedule before selecting hardware.
- Document the slabRecord maker, model, size, thickness, core, and published weight.
- Add permanent itemsInclude glass, mirrors, decorative faces, acoustic layers, pulls, locks, and reinforcement.
- Count each leafFor double doors, calculate each panel separately; do not average unlike doors.
- Resolve uncertaintyWeigh the completed door safely or obtain a written figure from the fabricator.
Packaging, pallets, crating, and loose parts can make freight data unlike the installed moving weight.
03
Construction changes weight—and behavior
| Door type | Capacity concern | Attachment concern |
|---|---|---|
| Hollow-core | Usually lighter, but large panels can flex. | Needs solid blocking or an approved top attachment zone. |
| Solid-core or wood | Greater mass increases roller, stop, and damper demands. | Prevent splitting and follow fastener edge distances. |
| Glass or mirrored | Dense and impact-sensitive; requires accurate weight and controlled travel. | Use fittings designed for the exact panel. |
| Metal or specialty | Weight may be concentrated in skins, frames, or reinforcement. | Coordinate inserts or attachment points with the fabricator. |
| Applied finish | Stone, acoustic layers, and moldings add weight after base specification. | Projection must clear pocket, jambs, and guides. |
04
Choose useful capacity margin
Leave room for uncertain finish weight, changes, adjustment, wear, and impacts.
Shared baths, kitchens, offices, and hospitality spaces may cycle often.
A slammed door creates forces beyond static weight. Soft-close must be correctly sized.
Reserve capacity leaves options if a heavier slab is installed later.
Compare capacity as a coordinated system. View available pocket-door frame kits ↗
05
Width, height, thickness, and weight work together
Create more leverage at hangers and greater momentum at stops.
Can flex or rack and magnify an out-of-level track or crooked pocket.
Must fit hangers, guides, cavity, jambs, pulls, and lock.
Glass cutouts and applied finishes can shift the center of gravity.
A high-capacity hanger can still be incompatible with the track, frame, door thickness, damper, or attachment method.
06
Soft-close, soft-open, and synchronization
Soft-close
Damper and trigger need an approved weight and minimum-width range. Wrong sizing can prevent control or engagement.
Soft-open
Reduces stop impact as the slab enters the pocket. Verify usable opening and pull access.
Synchronization
Cables or belts link double doors. Confirm each leaf, combined limits, travel, and adjustment.
An accessory may accept less weight than the primary frame. Its approved range becomes the limit when installed.
07
Special rules for double doors
08
Warning signs of a capacity or support problem
Track bows or height changes during travel
Inspect track support, header deflection, fastener spacing, and capacity before adjusting.
Rollers click, grind, bind, or flatten
Check overload, damage, debris, misalignment, and incompatible track components.
Door drifts open or closed
The track may be out of level; extra stop pressure is not a proper correction.
Top attachments loosen or crush the slab
The door may lack reinforcement, or the attachment may be wrong for its material.
Soft-close fails to catch or release
Verify weight range, door width, trigger location, adjustment, and travel.
A sagging track, loose hanger, cracked attachment, or damaged glass panel can become a falling-door hazard.
09
Before ordering hardware
Match the complete load path
Choose hardware from the finished door.
Verify every component against the exact dimensions and completed weight.