Aphonic grilles

The LSP aphonic grilles are designed to reduce noise in air intake and discharge duct systems. Utilising Slim Hurdle™ thin-baffle technology, they offer a net open surface area more than twice that of conventional products, ensuring minimal pressure drop, often below 5 Pa. Available in five models, with acoustic performance ranging from 7 to 19 dB(A), LSP grilles are commonly used in conjunction with heat exchangers, radiators, chillers, air conditioners, and heat pumps.

Products

Griglia-Afonica-LSP-Silenziatore-Grigliato

The LSP aphonic grille

Features

The LSP acoustic grilles stand out for their distinctive features that make them unique:

They feature a high net open area, up to 100% greater than the average of comparable products.
They allow for low pressure drop, typically around 5 Pa.
They offer variable orientation of the sound-absorbing baffles, even in the vertical configuration, to optimise acoustic absorption in environments with differing sound profiles.
An exclusive baffle-less version (without internal baffles) is also available.

Available in five models, with a performance range of 7 to 19 dB(A), LSP aphonic grilles can be installed in confined spaces and integrated into soundproofing enclosures, acoustic barriers, or sound-absorbing casings for air conditioners and heat pumps.

Their technical features, such as high net open area and low pressure drop—make them suitable for systems requiring high airflow volumes. They are also the only grilles of their kind that can be installed in compliance with minimum clearance requirements between protective structures and hazardous machinery zones.