01
Know which size you are discussing
Clear opening
The usable passage when fully open. This matters for circulation, furniture, accessibility planning, and code review.
Door-slab size
The actual moving panel. Overlap and the portion left exposed mean slab width may not equal clear width.
Rough opening
The framed space required by the entire pocket-door system, including the passage, pocket, track support, and allowances.
A “36-inch door” could mean slab or opening. Record clear width, slab size, and rough opening separately, then verify the selected frame chart.
02
Measure in the right order
- Set the passageMeasure the widest person, appliance, furniture, or equipment, then add working clearance.
- Confirm heightMeasure from the final floor, not the subfloor, to the finished head condition.
- Measure pocket wallVerify uninterrupted storage length and note corners, cabinets, switches, plumbing, ducts, and framing.
- Check wall depthIdentify framing size and material, plus finish thickness on both faces.
- Select the systemMatch configuration, slab thickness, completed weight, height, wall type, and motion hardware.
- Use its chartLay out the rough opening only after the exact frame is chosen.
03
Choose width from use, not habit
| Location | Check | Ask |
|---|---|---|
| Closet or pantry | Bins, shelving, and access to both sides. | Can the largest stored item pass? |
| Bathroom | Privacy hardware, fixtures, mobility, and local rules. | Does the clear passage suit every intended user? |
| Office or bedroom | Furniture moves, circulation, and any code requirements. | Can furniture enter without removing trim? |
| Laundry or utility | Appliance body, handles, hoses, and service access. | Can the complete appliance pass? |
| Wide room connection | One large slab versus a double system. | Would two lighter slabs work better? |
Nominal slab width does not prove compliant clear width. Confirm the measured opening, operating hardware, maneuvering space, thresholds, and local requirements.
04
Choose height with the whole wall in mind
Usually simpler to source, but “standard” kits can still require different rough openings.
84- and 96-inch doors add weight and make level floors, straight slabs, and accurate headers more important.
Measure both sides and the center, use the smallest finished height, and account for new flooring.
Compare products by the height supported by the frame. View Hartford pocket-door frame kits ↗
05
Make sure the wall can store the door
Needs a clear pocket on one side. The assembly is commonly around twice the opening width, but the kit chart controls.
Needs a pocket on each side, with both walls free of utilities and structural conflicts.
Pipes, ducts, boxes, blocking, bracing, columns, and recessed accessories cannot occupy the travel path.
Long or load-bearing openings need a properly designed header; a pocket frame is not structural design.
Keep edge pulls reachable and verify rollers or soft-close parts can be adjusted without opening the finished wall.
06
Match the slab to the frame and hardware
Completed weight
Include glass, mirrors, applied panels, locks, pulls, and edge hardware. Leave useful capacity above the final weight.
Thickness
The slab must suit the hangers, guides, cavity, jambs, pulls, and locks. Sculpted faces need extra clearance.
Material and stability
Solid-core, wood, glass, and metal doors behave differently. Tall or heavy slabs need a stiff, straight panel.
Motion hardware
Soft-close and soft-open devices may have minimum width and weight ranges. Verify compatibility before ordering.
Choose the door and frame together. If one comes first, record every limit the other must meet.
07
Common sizing mistakes
Framing before selecting the kit
Rough-opening formulas vary. Use the exact frame's current chart.
Measuring from the subfloor
Tile, wood, underlayment, and transitions change the finished opening height.
Equating slab width with clear width
Stops, overlap, pulls, and exposed door edges can reduce usable passage.
Ignoring trim and baseboard
Finishes affect jamb depth, guides, pull access, and retraction.
Checking wall length but not wall contents
Pipes, wires, blocking, or structure can prevent a pocket even when the wall looks long enough.
08
Record these dimensions before ordering
Ready to match the opening to a frame?
Compare the system chart before framing.
Use the selected kit's dimensions, limits, and instructions as the final authority.