Efficient Ducting Step Down Joining Collar 150-300mm

Experience seamless airflow with this high-quality Ducting Step Down Joining Collar, ideal for connecting ducting systems of varying sizes. Designed for easy installation and superior fit, this joiner will make your ductwork setup efficient and hassle-free.

Features and Benefits

  • Size Range: Suitable for ducting systems ranging from 150mm to 300mm in diameter
  • Tapered Design: Assists in achieving a tight and leak-free connection between ducts
  • Easy Customisation: Use a hacksaw to remove any unwanted parts and create the perfect fit for your ductwork
  • Actual Outer Dimensions: Collars are tapered, allowing for outer dimensions of 305mm to 300mm, 255mm to 250mm, 205mm to 200mm, and 155mm to 150mm

How to Use

  1. Identify the required size of the joining collar by measuring the diameters of the ducts you wish to connect.
  2. Using a hacksaw, carefully cut off the unwanted parts of the joiner to match the desired size.
  3. Slide the collar onto one end of the duct, ensuring a snug fit.
  4. Connect the second duct to the other end of the collar, creating a secure and tight connection.

Aqua Gardening Suggests These are Best For

This Ducting Step Down Joining Collar is best for indoor gardeners, HVAC professionals, and DIY enthusiasts who require a simple and effective solution for connecting ducting systems of different sizes. Its versatile design makes it ideal for a wide range of applications, including ventilation systems, air conditioning, and hydroponic setups.


What is the purpose of a Ducting Step Down Joining Collar?

The Ducting Step Down Joining Collar is designed to connect two different sizes of ducts. This reducing duct joiner is tapered to ensure a tight, secure fit when attaching ducts of varying sizes.

Can I adjust the size of the Ducting Step Down Joining Collar?

Yes, using a hacksaw, you can easily cut off the unwanted parts of the joiner to obtain the exact size you need.

What are the actual outer dimensions of the collars on the Ducting Step Down Joining Collar?

The actual outer dimensions of the collars on this joiner are tapered as follows:

305 mm - 300 mm / 255 mm - 250 mm / 205 mm - 200 mm / 155 mm - 150 mm.

Can the Ducting Step Down Joining Collar be used with any type of ducting material?

Yes, the joiner is compatible with various ducting materials, including but not limited to, flexible ducting or metal ducting.

How do I properly secure the Ducting Step Down Joining Collar to my ductwork?

To connect the joiner to your ductwork, simply slide the desired size collar over the smaller duct end and tighten it with an appropriate hose clamp or duct tape to ensure a secure fit. Repeat this process on the larger duct end using the opposite collar size.

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(SKU: 131468)

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1 Year Replacement Warranty - Store warranty, this product needs to be returned to Aqua Gardening for testing and replacement.


60 Day Returns - We will provide a refund, exchange or store credit where you have decided you no longer want the product and it is in new, unopened condition. More details...