Phone Booth CAD Block: Dimensions & Specs 2026

Architects and designers searching for a phone booth CAD block need accurate footprint data, door-swing clearances, and acoustic spec references — not generic furniture symbols that force manual rework on every project.

TL;DR: A phone booth CAD block for a single-occupancy acoustic booth typically covers a footprint of 1.0 m × 1.2 m to 1.2 m × 1.4 m, requires 900 mm door-swing clearance, and must account for 30–35 dB noise reduction ratings when specifying for workplace privacy. The Soundbox Store Quell Solo and Folio phone booths are the most commonly specified single-person acoustic pods in 2026, both tested to ISO 23351-1:2020 and sized to slot into standard open-plan grids.

Why Accurate CAD Data for Phone Booths Matters in 2026

Acoustic phone booths are no longer an afterthought in workplace design. In 2026, open-plan density has pushed acoustic zoning to the front of every fit-out brief, and a single wrong footprint in a CAD file creates downstream problems: clashing with sprinkler heads, blocking emergency egress, or leaving insufficient clearance for HVAC diffusers. Getting the block right at the concept stage saves hours of revision during technical design.

The dimension sets below are drawn from published product data for Soundbox Store's acoustic phone booths and pods. Use them as the basis for your CAD block geometry, then verify against the current product spec sheet before issuing for construction.

Who This Guide Is For

This guide is written for interior architects, workplace designers, and space planners who are:

• Specifying single-person acoustic booths in open-plan offices, coworking spaces, or hybrid-ready fit-outs
• Working in Revit, AutoCAD, or SketchUp and need footprint, elevation, and clearance data to build or validate a CAD block
• Responsible for ensuring the pod meets fire egress, accessibility, and acoustic performance requirements before the product ships

If you are a procurement lead or facilities manager choosing between models without CAD software, the specification tables here still give you the dimensional and acoustic data you need.

What to Look for in a Phone Booth CAD Block

Accurate External Footprint

The external dimensions of the booth — not the internal usable area — determine whether the unit clears structural columns, data cabling routes, and adjacent furniture runs. A single-person acoustic booth in 2026 typically sits between 1.0 m × 1.2 m and 1.2 m × 1.5 m externally. Any CAD block that omits wall-panel thickness (usually 80–120 mm per side) will understate the real floor area consumed.

Door-Swing Zone and Egress Clearance

Most phone booths use an outward-swinging door — commonly 600–700 mm wide — which requires a minimum 900 mm clear zone in front of the booth. In jurisdictions following IBC or BS 9999, that clearance must not overlap a primary egress route. Plot the door-swing arc in your CAD block, not just the door panel, so reviewers can check compliance without opening a separate drawing.

Internal Working Envelope

The internal envelope matters for two reasons: ergonomics and equipment. A solo user needs at least 700 mm × 900 mm of clear floor area to sit comfortably, plus a desk ledge at 720–740 mm AFF. If the brief includes a monitor arm, add 150 mm depth behind the panel. Note these dimensions in the block's attribute data so the M&E engineer can size power and data outlets correctly.

Acoustic Rating and Wall Construction

ISO 23351-1:2020 is the current standard for measuring speech privacy in office pods. A booth rated at 30 dB attenuation reduces a loud conversation (70 dB) to background murmur (40 dB) outside the unit. CAD blocks should carry the Rw or ISO rating as a block attribute — it feeds directly into acoustic consultant reports and helps justify the product selection to the client.

Ventilation and Electrical Penetrations

Every acoustic booth has a ventilation unit — typically ceiling-mounted — that requires a power draw of 40–80 W and may need a dedicated circuit. The exhaust air path (recirculating or ducted) affects ceiling clearance requirements. Plot the ventilation unit outline in plan and mark the electrical connection point in the block so the MEP team can coordinate without a separate RFI.

Height and Structural Load

Standard phone booths stand 2.1–2.3 m tall. In buildings with raised access floors, the effective finished floor level shifts the booth top closer to the structural soffit. Confirm the block reflects booth height without furniture, and note the approximate dead load — typically 200–400 kg for a solo unit — so the structural engineer can confirm the floor slab rating.

Specification Data for Common Soundbox Store Phone Booths (2026)

The table below uses published dimensional data from Soundbox Store's current acoustic phone booth lineup. These figures are the starting point for building or adapting a CAD block.

Verify all dimensions against the current Soundbox Store product data sheet before issuing drawings. Manufacturers update tolerances between production runs.

Top Picks: Which Phone Booth to Block and Specify

The Workhorse Sit-Down Booth — Quell Solo

The safe pick for seated single-user specification. The Quell Solo is the most frequently specified sit-down phone booth in Soundbox Store's range. It delivers 30–35 dB attenuation tested to ISO 23351-1:2020 and fits a standard 1.2 m × 1.2 m grid square, making it easy to batch-place across a large floor plate without custom clearance calculations. Furniture options are published separately, so MEP load schedules stay clean.

Verdict: Buy for any sit-down single-occupancy brief where the floor plate follows a 1.2 m structural grid.

The Compact Stand-Up Option — Folio Phone Booth

The right call when floor area is tight. The Folio stand-up booth has a smaller external footprint than the Quell Solo, which matters when the designer is fitting booths into residual circulation zones between workstations. It achieves the same ISO 23351-1:2020 acoustic standard. The trade-off is user comfort on calls longer than 20 minutes — it is a stand-up unit without a work surface for laptops.

Verdict: Buy for high-traffic environments where rapid-turnaround calls dominate; Consider for environments where users will take extended video calls seated.

The Flexible Hybrid — Quell Flex Solo

The wildcard for phased fit-outs. The Quell Flex Solo is built for offices that expect to reconfigure. The moving kit compatibility means the booth can be relocated without specialist contractors, which matters on leased floors where the landlord restricts structural fixings. Acoustic performance stays at 30–35 dB. For architects drawing up a CAD block, the footprint is the same as the Quell Solo, so the same block geometry applies.

Verdict: Buy for leased buildings or phased fit-outs; Hold if the floor plan is fixed and the client won't need to move the unit.

What to Avoid When Specifying a Phone Booth CAD Block

• Generic furniture-library symbols without acoustic data. Most CAD libraries include "phone booth" or "privacy pod" symbols sized at approximately 1.0 m × 1.0 m with no wall thickness, no door swing, and no acoustic attribute. Using these for space planning is acceptable at concept stage, but issuing them for tender without replacing them with manufacturer data causes abortive cost when the real unit arrives.
• Blocks that don't account for ventilation clearance. Acoustic booths recirculate or exhaust air through the ceiling. A block that shows only the booth footprint without a 150–300 mm ceiling zone for the HVAC unit creates coordination conflicts with structural steel, sprinkler heads, and lighting circuits that are expensive to resolve in the field.
• Treating sit-down and stand-up units as interchangeable. The two booth types have different internal heights, desk configurations, and ergonomic envelopes. A CAD block built for a 2.25 m sit-down booth will not accurately represent a 2.2 m stand-up unit, and the difference matters when checking structural soffit clearances or specifying integrated lighting.

Comparison Table: Soundbox Store Single-Person Booths for CAD Specification

FAQ

What is the standard footprint for a phone booth CAD block? A single-person acoustic phone booth typically occupies 1.0–1.2 m × 1.1–1.5 m externally in 2026. The exact figure depends on wall panel thickness (80–120 mm per side) and whether the unit is a sit-down or stand-up model. Always use manufacturer data rather than library defaults for issued drawings.

How much door-swing clearance does a phone booth need in a CAD plan? A standard outward-swinging booth door (600–700 mm wide) needs a minimum 900 mm clear zone in front of the unit. This zone must be plotted in the CAD block and must not overlap primary egress routes under IBC or BS 9999.

What acoustic rating should I specify for an office phone booth? For meaningful speech privacy in an open-plan office, specify a minimum 30 dB attenuation rated to ISO 23351-1:2020. The Soundbox Store Quell Solo, Folio, and Quell Flex Solo all meet 30–35 dB under this standard. Ratings below 25 dB will not prevent speech intelligibility outside the unit.

Do phone booths need a dedicated electrical circuit? Most acoustic booths draw 40–80 W for integrated ventilation and lighting. A dedicated 13A circuit is standard in UK fit-outs; a 15A or 20A circuit covers the same load in US installations. Mark the electrical connection point in the CAD block attribute data so the MEP engineer can design the circuit without a separate query.

Can I use the same CAD block for a stand-up and a sit-down phone booth? No. The two types differ in internal height, desk configuration, and usable envelope. Using one block for both creates errors in soffit clearance checks and MEP coordination. Build or download a separate block for each model.

How do I check if a phone booth fits within the structural grid? Place the external footprint of the booth on the structural grid overlay in your CAD file and check all four sides for column clashes. Then add the door-swing arc and check against circulation routes. Finally, confirm the booth height against the finished ceiling level, accounting for any raised access floor.

Where do phone booths typically go on a floor plate? Acoustic booths perform best away from primary circulation routes (to keep the door-swing clearance unobstructed) and within 10–15 m of the nearest data/power floor outlet. Placing them near perimeter windows is common in 2026 fit-outs, as natural light improves user comfort in enclosed units.

Does Soundbox Store provide CAD files for their phone booths? Contact Soundbox Store directly through soundboxstore.com to request product data sheets and dimensional drawings. Published footprint and height data are available in the product listings and form the basis of the specification table in this guide.

One Last Thing

The ISO 23351-1:2020 standard — the benchmark used by Soundbox Store and most serious acoustic booth manufacturers in 2026 — measures speech level reduction rather than simple transmission loss. That distinction matters when you are writing a performance specification: a booth that "reduces noise by 35 dB" under ISO 23351-1 delivers measurably better speech privacy than a product quoting a 35 dB Rw value from a different test method. Specify the standard by name in your CAD block attributes, not just the number, so there is no ambiguity during procurement.

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