Frequently asked questions about Silentbox acoustic booths
Find answers about sound insulation, ventilation, models, prices, delivery, installation, warranty and day-to-day use of the booths.
Booths & sound insulation
It is the level of noise reduction measured in an independent laboratory to the international ISO 11957 standard: the Premium series delivers −35 dB, Lite −25 dB. In practical terms, a conversation inside a Premium booth is inaudible just one metre away, and outside office noise barely penetrates the booth. The −25 dB of the Lite series is enough to suppress speech noise and give you privacy for calls and focused work; the −35 dB of the Premium series is for confidential meetings. These are not numbers pulled out of thin air — acoustic test reports are available on request.
In Premium and WorkPod — practically not: the certified insulation attenuates the speech range, so to people nearby your conversation becomes an unintelligible, muffled murmur. With Lite, colleagues will hear only a faint hum with no distinguishable words. For genuinely confidential conversations (interviews, legal or financial consultations) we recommend Premium or WorkPod.
The booth wall is a multi-layer structure: an aluminium frame, a sound-absorbing layer and the finish, which together attenuate noise. The door is sealed with a patented perimeter gasket (UA 147003, UA 150386, EUIPO RCD 015018000) — it is what stops sound from leaking around the door contour. The glazing is three-layer laminated glass that preserves the view and daylight without compromising insulation.
No. Every booth has its own forced ventilation rated at 250–600 m³/h with an occupancy sensor: air is supplied at the top and extracted at the bottom, with a complete air change every 2–3 minutes. The fan runs quieter than 30 dB, so it does not get in the way even on long calls.
As long as your work requires — an hour, half a day or a full working day. The supply-and-extract ventilation completely refreshes the air every 2–3 minutes and prevents carbon dioxide from building up, so the booth does not get stuffy even during long meetings. Booths designed for focus work (WorkPod) come with an ergonomic height-adjustable desk and comfortable LED lighting so you stay productive for hours.
They are two different acoustic standards, and Silentbox booths are certified to both. ISO 11957 measures the overall noise reduction of the structure — the familiar decibel figure (for example, 35 dB). ISO 23351-1 assesses speech-level reduction specifically: how effectively the booth attenuates human speech so a conversation cannot be made out from outside. Both matter for an office: the first guarantees quiet for concentration, the second — the confidentiality of your meetings.








