Acoustic exterior grilles, type AKR

Acoustic exterior grilles are especially suitable for places where ventilation grilles with high sound attenuation, low air resistance and a low profile are required. The grille is made of Sendzimir galvanised steel V-shaped slats in a housing. The filling consists of high-quality non-combustible sound-absorbing mineral wool, covered with fibreglass membrane and Sendzimir galvanised perforated sheet. The grille comes with a rain shield, a bird-resistant screen and a mounting flange. The grilles have been designed so that they can be integrated into any architecture, geometry or colour. On request the grilles can be supplied with coloured preservation coating and in aluminium or stainless steel.

There are five different types of acoustic grille with insulation values ranging from 11 to 21 dB.

Type	150	300	350	500	HMH
Grille thickness (mm)	146	289	289	500	500
Minimum height (mm)	300	300	300	300	300
Maximum height (undivided) (mm)	3000	3000	3000	3000	3000
Minimum width (mm)	200	200	200	200	200
Maximum width (undivided) (mm)	3000	3000	3000	3000	3000
Weight (kg/m2)	41	61	60	83	89

Applications of AKR grilles

The acoustic ventilation grilles are ideal for:

cooling/heating systems

air conditioning systems

multi-storey car parks

boiler houses

compressor houses