Round Access Doors

Curved access doors to suit circular ductwork. Used to access the insides of the ducting to reset fire dampers or to clean.
A sandwich type effect that clamps the opening with a gasket seal by wheel knobs.
Self adhesive template included.
Size: 250x150 - for all door's
Size: 400x300 - for 560 dia Big

SKU: Alph35

Delivery date: 2-3 days

Ducting Size *

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Round Access Doors

Our Round Access Doors are manufactured from durable galvanised steel and designed to provide convenient access points within commercial and industrial spiral ductwork systems.

These access doors allow maintenance engineers and installers to inspect, clean, and service ventilation systems without dismantling sections of ductwork. Commonly used in HVAC systems, extraction systems, and industrial ventilation installations, they provide a practical solution for ongoing system maintenance and airflow inspection.

Compatible ductwork products include Spiral ducting tube, Spiral Ducting Reducers, 45° Spiral Ducting Bends, 90° Spiral Ducting Bends, Volume Control Dampers, and Blast Gate Dampers.

Manufactured for durability and corrosion resistance, these galvanised round access doors are suitable for commercial ventilation systems, industrial extraction systems, workshop ventilation, and general purpose ductwork installations.

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Fusible Links

We offer a large range of replacement fusible links which can be used in different ways in dampers, doors and vents. All common fusible links are in stock and for sale on this page. Please enquire for other types if you cannot find them on our website, as we can offer higher temperatures.

Found in systems such as fire doors, fire dampers and sprinkler systems.
A metal link engineered to melt at a certain temperature, releasing a latch, closing a door or activating a sprinkler.

Common fire damper makes these are used on include BSB, HVC, NCA, Advanced Air, Action Air, Swegon, Chubb Fire, Flaktwoods, A1 Shutters, Lindab Fire Dampers, Wolseley UK, Fel Valves, Ascot Doors, Kidde Thorne, Dayton 2TGJ3 and Gilberts.

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Flat Access Doors

Square and rectangular insulated, tabbed and sealed access doors for flat surfaced ducting. Used for resetting fire dampers and cleaning ductwork. Other sizes available please enquire.

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Single Fix Dual Thread Bracket

Galvanised steel suspension ring bracket for hanging or fixing ducting. Completed with a central dual fix (M10/M8) screwed rod nut on top. Available in sizes ranging from 80mm – 315mm.

*Please note* some of the more uncommon sizes may have a larger lead time.

Data Sheets

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Replacement Fire Damper Springs x2

Fire damper springs, also known as constant force springs, are essential components used on both sides of a curtain fire damper. They ensure the damper opens and closes correctly in the event of smoke or fire, helping to contain hazards within the ductwork.

Sold in pairs, as we recommend replacing both springs at the same time for balanced performance and safety compliance.

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