Propex Acoustic Ducting 1 Metre

Only 2 left
SKU: 8013661
Regular price $79.99

Technical hot air ducting suitable for use on 2kW heaters. This ducting is designed to reduce any noise transmitted through the ducting from the heater as well as air noise associated with it moving through the ducting.

Acoustic ducting has a wide porosity rating of 50 – 500 Hz and so deadens a range of frequencies. Test have shown that maximum effect will be gained when using 1 metre of ducting and this should be positioned any where within the ducting run between the heater and first outlet.

With an HS2000 heater fitted in a cabinet inside an ’empty’ VW T5 van the following results were recorded. The Sound level meter is positioned 200mm directly above hot air outlet:

  • Ambient noise level 41.5 dB.
  • Sound with 1 metre Caraflex 65dB.
  • Sound level with 1 metre Acoustic Ducting 55.5 dB.

This test was carried out with no ducting fitted to the air return side of the heater. A short length fitted to the air return on the heater will also have a positive effect on reducing air noise.

Ducting should be used in applications where bend radii less than 10cm are not required. Ducting has a working temperature of -40C to +120C and has a flammability rating of type E (FMVSS302)

For use with Heatsource 1600, HS1800 or HS2000, HS2000E, and all underfloor heaters, also suitable for use on Whale blown air heaters and Truma heaters where it is more commonly described as 65mm ducting, this is the outside diameter of the ducting and the 60mm refers to the inside diameter.

We always strive to ensure that you receive your order promptly and in perfect condition.

Shipping & Pickup:

  • FREE Courier Delivery to North & South Islands on orders over $399.
  • For orders under $399 courier delivery is a flat rate of $10 per order for residential deliveries or $15 per order for rural deliveries within the North & South Islands.
  • Some items may be restricted from courier delivery and need to ship by road transport at extra cost.
  • It is free to collect any order from our RV Mega retail store at 101 Hewletts Road, Mount Maunganui. Store pickup is available Monday to Friday only. Orders are usually ready within 4 hours.

Some items may be restricted from courier delivery due to being too large or heavy, or classed as Dangerous Goods, in which case those items with ship via road transport. Items which ship via road transport will have the transport cost to your location shown on the product page.

  • North Island Road Transport $120
  • South Island East Coast & Southern $160
  • South Island West Coast $270

Once your payment has been received your order will be dispatched. Full tracking information will be emailed to you on dispatch of your order, so please check your Inbox or Junk Folder for this.

Delivery time is generally within 2-4 working days for courier, or 7 days for road transport, unless an item is out of stock or on backorder, in which case you will be notified as soon as possible.


You are welcome to return any product which is unopened, unused and in the same condition that you received it. It must also be fit for resale, in the original packaging, and be accompanied with a receipt or proof of purchase. Our Returns policy lasts for 14 days after delivery. Please contact us via email to arrange a return and include the order number in your email.

Once we have received an inspected the return we will refund the full purchase price of the product. Any item not in its original condition, where the packaging has been opened, the product is damaged or missing parts for reasons not due to our error or a manufacturing fault, or any item that is returned more than 14 days after delivery may not qualify for a refund.

Excludes electronic items, awnings, vehicle covers, gas appliances, toilet parts & items specifically ordered for you.

Please note:

  • We do not ship outside of New Zealand
  • Deliveries cannot be made to PO Boxes. Please provide a physical address.
  • Rural, road transport and some residential areas may require an additional delivery time. If you do not receive your goods within a reasonable time, please check the tracking information we have provided, and if necessary call us so that we can follow up on your behalf.
  • Please take the time to inspect your new product for damage prior to accepting receipt of it from the delivery company/driver, as we cannot accept liability for goods lost or damaged in transit. In the event of product being damaged in transit, please let us know immediately and we will work on your behalf with the delivery company, to ensure you get the best service and results.

All products come with a minimum 12 months manufacturers or distributor warranty, unless otherwise stated. Please retain your original invoice / receipt as proof of purchase. In the result of a claim under warranty, you may be required to ship the product back to us or the service agent, or we may arrange to use a local service agent. Shipping costs are not covered under the warranty.

Faulty products will be repaired or replaced at our discretion. Should a replacement product be unavailable, we will credit you the original purchase price of the product.

If the product is found to be faulty due to inappropriate installation or misuse, warranty coverage will not apply.