DuroZone Product Catalog - Duro Dyne

DampersMB Multi-BladeMMB Spring ReturnMid-Torque Multi-BladeSMB Spring ReturnHigh-Torque Multi-BladePower Open/Power ClosedRoundMulti-Blade DampersThe DuroZone Multi-Blade damper for residential zoning systems has beenengineered to include many features. Ribbed for strength and extruded fromlightweight aluminum, the sleek frame profile provides maximum strengthwithout excessive reduction of free area inside the ductwork. The extrudedaluminum blades are mounted with friction minimizing nylon bushings toprovide easy transition between opening and closing. The DuroZone SpringReturn Multi-Blade Dampers also feature damper blades designed to remainwithin the damper frame for easy insertion and an external side-mountedlinkage for smooth and quiet operation. Multi-Blade dampers are available in74 stock sizes with a 24-volt spring return “Mid-Torque” motor or a PowerOpen/Power Closed motor. An optional Spring Return High Torque motor isalso available.Round DampersDuroZone round dampers are made of galvanized steel with reinforcing beadsfor maximum durability. Round dampers are available with different motoroptions: Power Open/Power Close, Mid Torque Spring Open/Power Closeand High Torque Spring Open/Power Close. The single blade design insuressmooth operation and efficient sealing for maximum control of air flow. Theround housing is suitable for use with flexible ducting or round sheet metal duct.High-TorqueRoundMulti-SizeMulti-Size DampersSince each damper of this series is adjustable, the eight different sizes availablewill adjust to 30 of the most common duct size requirements. This, coupledwith an extruded aluminum frame and formed aluminum blade (combiningminimum weight with maximum strength) results in a damper of unsurpasseddurability and versatility. Each damper easily adjusts to a minimum of threedifferent sizes and includes a mid-torque motor that ensures reliable troublefree operation.Multi-SizeSpring ReturnSpring Open/Power ClosedRetro FitRetro Fit DampersDuroZone Retro Fit Dampers can be used to add a zoning system to existing6'' round ductwork without the need to section, take down or redesign existingduct. Retro Fit Dampers feature a high strength molded mounting plate withgasketing as well as a blade with an integral seal to further minimize or eliminateleakage. DuroZone Retro Fit dampers are available with two different 24 voltmotor options: Spring Open / Power Close and Power Open / Power Close.They can be linked together for tandem operation.Power Open/Power ClosedRetro FitDuroZone Product Catalog Page 4