Rectangular attenuators SagiCofim RAS series attenuators are products with top level acoustic performances, great manufacturing features and low pressure drops. All the models have a series of aerodynamic profiles on the splitters to limit the resistance of the air flow and the regeneration of noise as much as possible. Acoustic insulation panels are constructed of mineral fiber with high acoustic absorption features; in the standard version they are coated with a sheet of reinforced glass. The RAS-LF version is made of panels protected by perforated sheet. They are set inside galvanized steel bearing frames, fixed to the surface of the structure. The attenuators have flanges on the two ends used to connect them to the air ducts. A special model is made of perforated sheet and polyester protective membrane (HOSP suffix) for special applications (for ex. Hospitals, food and electronic industries). Applications RAS attenuators are suitable for installation in air conditioning and ventilation systems to attenuate the noise produced by the fans and transported by the air flow. They comply with both the requirements for civil, industrial and special systems and assure high noise attenuation performances. Installation RAS attenuators are normally installed on ducts. They are assembled using the flanges they are fitted with which match the ones on the ducts. The position of the attenuators must be carefully studied so as to avoid a noise return through the duct at the end of the attenuator itself. Acoustic performances N.B. the number before the letter identifies the length of the attenuator in feet (foot 300 mm), so 3 = 900 - 4 = 1200 - 5 = 1500, etc.

Rectangular attenuators SagiCofim After choosing the type of attenuator according to the acoustic performances on the previous page, you need to determine the front sizes according to the air flow rate and the pressure drop of the attenuator chosen (i.e. according to its front sizes and air flow rate). Acoustics performances These are the tables for the three models: RAS - 4A RAS - 4L RAS - 4M that will help you determine: the pressure drops* the front sizes, the air flow rate. (one in relation with the other two values). * These values refer to a 1200 mm long attenuator installed between two...

Rectangular attenuators SagiCofim How to determine the price and how to order 1 Choose the table corresponding to the chosen length (L) N.B. The numbers before A, L, M letters identify the attenuator length (1 foot = 300 mm) so 2 = 600 - 3 = 900 - 4 = 1200, etc. 2 Determine the number of the modules dividing the width or base (B) of the attenuator by the value of the module of the relevant model. • Module A = 300 • Module L = 350 • Module M = 400 3 Position yourself on the line that matches the height (H) of the attenuator and choose the price between the one of the standard version (RAS) and...

Rectangular attenuators SagiCofim Attenuators long (L) 900 mm Special models HOSP with protective polyester membrane CAVILEN - MELINEX and perforated sheet, 5% price increase on LF series Special AIR TIGHT version 3% increase

Rectangular attenuators (mm) RAS RAS/LF RAS RAS/LF RAS RAS/LF RAS RAS/LF RAS RAS/LF RAS RAS/LF Special models HOSP with protective polyester membrane CAVILEN - MELINEX and perforated sheet, 5% price increase on LF series Special AIR TIGHT version 3% increase

Rectangular attenuators (mm) RAS RAS/LF RAS RAS/LF RAS RAS/LF RAS RAS/LF RAS RAS/LF RAS RAS/LF Special models HOSP with protective polyester membrane CAVILEN - MELINEX and perforated sheet, 5% price increase on LF series Special AIR TIGHT version 3% increase

Rectangular attenuators Customized solutions with RAS sound attenuators Study an ar attenuator with divergent / convergent Combination fan + attenuator with support feet Inlet / exhaust attenuators with aeraulic accessories