MAK R 1050 H01 – 146011 – Motor shut-off flap – Ruck Motor shut-off flap with spring return for  ROTO 1050 H01. Motor shut-off flap With spring return (VDI 6022) Combined outdoor and exhaust air multileaf damper Galvanized steel sheet housing 2 duct connections Airtight according to EN1751 class 2 PRODUCT PDF MAK R RUCK