RECTANGULAR AIR VENTS Characteristics: Rectangular air vents with a telescopic cuff for installation in a building partition with a thickness of 300-540 mm. Intended use The rectangular NP1 and NP2 air vents are designed to supply fresh air to residential, storage or technical rooms such as boiler rooms. The NP1 and NP2 versions have a slot damper installed inside, used to regulate the air flow through the ventilator. The external intake vent is equipped with a protective mesh and a rain hood. The air intake and the diffuser are connected by a telescopic cuff adapted for mounting the set in a building partition with a thickness of 300 to 550 mm. There is an air filter and an acoustic silencer inside the telescopic cuff. The NP1s and NP2s are available in several variants: • OC/ML - Intake and duct are made of galvanized steel, diffuser painted in white, • CC/ML - Stainless steel air intake (grade. 1.4301), galvanized steel duct, diffuser painted white, • ML/ML - Air intake and diffuser painted white, galvanized steel duct, • CH - Air intake, diffuser and channel made of stainless steel (grade 1.4301). Dimensions Figure 1. Dimensions of the NP1/NP2 air vent. Table 1. Dimensions of the duct for the NP1/NP2 air vent. Table 2. Dimensions of the NP1/NP2 air vent. Dimensions [mm] Drag Drag ight SceOSOn coefficient coefficient Wr?ight section „ „ [kg] ABCD E F G _ 2i ^bez filtra ^z filtrem Figure 2. Air flow inside the apartment after installing the air vent in the room and the ventilation grille in the kitchen. Fgure 3 NP1NP2 insae in the OLJter waU

Technical data Chart 1. Pressure losses of the rectangular NP1 air vent. Chart 2. Pressure losses of the rectangular NP2 air vent. NP1 / NP2 - Rectangular air vents When ordering, please provide information in accordance with the following pattern: Ventilation duct size* 1 Design* OC/ML – Air intake and duct made of galvanized sheet metal, white diffuser – Stainless steel air intake (grade. 1.4301), galvanized steel duct, diffuser painted white. – Air intake and diffuser painted white, duct made of galvanized steel – Air intake, diffuser and duct made of stainless steel (grade 1.4301) * Optional...