Motorised Fire & Smoke Combination Damper FSD-C – 100mm to 315mm
The FSD-C is a motorised, fail-safe single blade combination fire and smoke damper for circular ducts where space is tight. Its single blade gives more free area than a multi-blade damper of the same size, and the perforated installation plate doubles as a fixing template for a fast, accurate install.
Key features
- Combined fire and smoke damper, fail-safe operation
- Single blade for maximum free area
- Installation plate acts as a fixing template
- 8 diameters from 100mm to 315mm
Please note: supplied as the damper only; the actuator is ordered separately.
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Specifications
Specifications
Compact and lightweight design
With a low weight of just 21 kg, this ventilation unit can be installed quickly and safely by a single installer. Its space-saving footprint makes the DucoBox Energy Comfort perfectly suited for small plant rooms and confined technical areas.
Software-controlled left/right configuration
The unit is designed for maximum installation flexibility. Left- or right-hand airflow orientation is adjusted entirely via software, eliminating the need for mechanical modifications. This is made possible by an innovative patented double bypass system.
Automatic calibration
Using constant pressure calibration technology, the AUTO calibration function reduces commissioning time by up to 50%. In real-world installations, this can translate into lower labour costs and faster system setup.
High energy efficiency
Advanced dynamic air filtration ensures consistently high heat recovery efficiency. When combined with optional intelligent demand control based on CO₂ and humidity sensors, the system delivers excellent indoor air quality while minimising energy consumption.
Smart copy function for fast commissioning
An integrated software-level copy feature allows installers to duplicate settings and parameters from one unit to another. This is especially valuable for multi-unit or repeated housing projects, ensuring consistent performance and significantly reducing setup time.
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Pure Clima is an authorized UK distributor of Ventmann frameless diffusers and gypsum-based products.

