315mm (12.5”) Fast Clamp - Anti-Vibration Fan & Duct Connector

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The 315mm (12.5") Fast Clamp provides a strong, secure and vibration-reducing connection between compatible circular ventilation components such as inline fans, filters and rigid duct fittings.

Rather than joining two pieces of ventilation equipment with a short section of flexible ducting, a Fast Clamp fits around the adjoining circular spigots to create a neat mechanical connection. This makes it particularly useful when installing fans directly alongside filters, silencers and other compatible ventilation equipment.

The galvanised steel outer band provides a strong connection, while the cushioned inner lining helps isolate vibration between connected components. Reducing the direct transfer of fan vibration into adjoining ductwork can help reduce structure-borne noise within a ventilation system.

The clamp can also be released when equipment needs to be removed, making it a practical choice for installations where fans or other components may require periodic inspection, cleaning or servicing.

Why use a 315mm Fast Clamp?

  • Secure mechanical connection - designed to join compatible 315mm circular ventilation components firmly together.
  • Anti-vibration lining - cushioned inner material helps reduce vibration transfer between connected equipment.
  • Helps control noise - isolating fan vibration can help reduce noise transmitted into adjoining ductwork.
  • Galvanised steel construction - strong metal outer band provides a durable connection.
  • Quick installation - wraps around adjoining circular connections and is tightened mechanically.
  • Easy equipment removal - the connection can be released when a fan or other component requires maintenance.
  • Professional installation - provides a neat alternative to improvised connections between compatible ventilation components.
  • Large 315mm size - suitable for compatible higher-airflow ventilation equipment with nominal 315mm connections.

Connecting fans, filters and ventilation equipment

Fast Clamps are particularly useful where two compatible pieces of circular ventilation equipment need to be connected directly together. Typical examples include joining an inline extraction fan to a filter or connecting a fan to compatible rigid circular ductwork.

The cushioned lining sits between the metal clamp and the connected components, helping provide a secure fit while reducing the direct transmission of vibration from operating equipment into the rest of the ventilation system.

This makes Fast Clamps useful in propagation facilities, nurseries, growing areas, controlled environments and general ventilation installations where both secure connections and vibration management are important.

How to install a 315mm Fast Clamp

Position the two compatible 315mm circular components together so that their connection points are correctly aligned. Open or loosen the Fast Clamp sufficiently to position it evenly around the joint.

Make sure the cushioned inner lining sits correctly around the connection before tightening the clamp. Tighten the fixings evenly until the components are held securely in position.

Avoid excessive tightening beyond what is required to produce a secure connection. Fans, filters and other heavy ventilation equipment should always be independently supported rather than relying on the Fast Clamp to carry their weight.

315mm (12.5") Fast Clamp product details

Product type Anti-vibration ventilation Fast Clamp
Nominal connection size 315mm / 12.5"
Outer construction Galvanised steel
Inner construction Cushioned anti-vibration lining
Primary purpose Connecting compatible circular ventilation components
Vibration control Inner lining helps reduce vibration transfer between connected components
Typical connections Fans, filters, rigid circular ductwork & compatible ventilation fittings
Maintenance Removable connection allows compatible equipment to be disconnected for servicing or cleaning
Suitable applications Controlled environment, propagation, nursery, growing area & general ventilation systems

315mm (12.5") Fast Clamp FAQs

What is a ventilation Fast Clamp?

A Fast Clamp is a metal connector designed to securely join compatible circular ventilation components while its cushioned inner lining helps isolate vibration between them.

What size is this Fast Clamp?

This model is designed for compatible ventilation components with a nominal 315mm / 12.5" circular connection.

Can I use it to connect a fan to a filter?

Yes. Connecting compatible fans and filters is one of the common applications for this type of Fast Clamp.

Can it connect a fan directly to rigid ducting?

Yes, provided the components have compatible nominal 315mm circular connections suitable for this type of clamp.

Does a Fast Clamp reduce vibration?

Yes. The cushioned inner lining helps isolate vibration rather than allowing it to transfer directly from an operating fan into adjoining ductwork or equipment.

Can reducing vibration make a ventilation system quieter?

It can help. Mechanical vibration transferred from a fan into ductwork can contribute to system noise, so isolating the connection can reduce this source of transmitted noise.

Is the clamp made from metal?

Yes. The outer clamp is manufactured from galvanised steel and incorporates a cushioned inner lining.

Can I remove the clamp again?

Yes. Fast Clamps are designed to provide a removable mechanical connection, making them useful where equipment may need to be disconnected for inspection, cleaning or servicing.

Is a Fast Clamp better than joining equipment with ducting?

Where two compatible rigid circular components are positioned directly together, a Fast Clamp can provide a neater and more compact connection than using a short section of flexible ducting between them.

Can I use this with 315mm ducting?

It is designed for compatible nominal 315mm circular ventilation connections. Always check the actual connection arrangement of the equipment being joined before installation.

Does the Fast Clamp support the weight of a fan or filter?

No. Fans, filters and other substantial ventilation equipment should be properly and independently supported. The clamp is intended to secure the connection rather than act as the equipment's primary support.

Where can 315mm Fast Clamps be used?

They are suitable for compatible circular ventilation systems in controlled environments, propagation facilities, nurseries, growing areas and other commercial or general ventilation applications.

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£3.35