The silencer that set the standard
Open Sil-block® is a PATENTED silencer specially designed for acoustic insulation of ventilation holes in buildings. This new development protects the living environment from noise pollution, as required by current regulations: Art. 2 of D.P.C.M. of 5/12/1997 - passive acoustic requirements of buildings.
Open Sil-block® was created in 2008 by SILTE's R&D department, when it was presented it was the first ever silencer for ventilation holes with a circular shape, with an internal sound-absorbing core with a helical profile, designed to be easily inserted and removed from an existing hole. These features made the Open Sil-block® the first inspectable, easy-to-clean and replaceable acoustic device. Prior to that, ALL borehole silencers required fixed installation in masonry, just like a brick!
The idea and intuition SILTE engineers had in creating an easily replaceable silencer gave ‘inspiration’ to many of our competitors who took up this concept. SILTE led the way, today, years later, most of the acoustic elements for ventilation holes on the market are replaceable and there are numerous silencers with a ‘SILTE-inspired’ design. In 2008, we had no idea that a simple intuition of ours had set the standard in the vent-hole silencer sector.
The First
Open Sil-block® is the first ventilation hole silencer that can be installed and replaced in a flash. In renovations, it allows the ventilation hole to be adapted to acoustic standards without masonry work.
Perfect for renovations
Open Sil-block® is suitable for all installations. The cylindrical shape and dimensions compatible with common commercial pipes allow application in existing ventilation holes.
Safe
Open Sil-block® complies with the UNI 7129 standard and has a net free air passage section of more than 100 cm2. Open Sil-block® has a DIRECT air passage, without elbows and localised pressure drops to guarantee correct and NATURAL ventilation. numerous silencers with ‘SILTE-inspired’ design. In 2008, we had no idea that a simple intuition of ours had set the standard in the vent-hole silencer sector.
Without installation
Open Sil-block® does not require any prior installation. In new buildings it is sufficient to prepare a Ø 20 cm hole in the wall where Open Sil-block® can be inserted once the work has been completed. In renovations, and in existing buildings, Open Sil-block® can be applied in ventilation holes of a compatible diameter without any masonry work. The wall must be at least 35 cm thick.
Replaceable
Open Sil-block® can be replaced by simply removing it from the duct without breaking or damaging the wall.
Acoustic insulation
Open Sil-block® provides the correct sound insulation required by legislation for residential kitchen rooms. It has a sound insulation value Dn,e,w= 40 dB, laboratory certified according to UNI EN ISO 140-10.