SKU: 68588362856

Blauberg SonoFlex Thermally & Acoustically Insulated Flexible Ducting 125mm x 5m

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Description

Blauberg SonoFlex Thermally & Acoustically Insulated Flexible Ducting 125mm x 5mBlauberg SonoFlex Thermally & Acoustically Insulated Flexible Ducting 125mm x 5m Product Overview The Blauberg SonoFlex Insulated Flexible Ducting is engineered to deliver superior thermal insulation, condensation prevention, noise reduction and flexibility. Designed for residential, commercial and industrial HVAC installations, it ensures long lasting performance while complying with UK Building Regulations. Available in multiple diameters and

Blauberg SonoFlex Thermally & Acoustically Insulated Flexible Ducting 125mm x 5m

Product Overview

The Blauberg SonoFlex Insulated Flexible Ducting is engineered to deliver superior thermal insulation, condensation prevention, noise reduction and flexibility. Designed for residential, commercial and industrial HVAC installations, it ensures long-lasting performance while complying with UK Building Regulations. Available in multiple diameters and lengths, SonoFlex is the professional choice for efficient ventilation solutions.

Condensation Control

Bathrooms, en-suites, kitchens and wet rooms are highly prone to condensation, leading to damp, mould and poor indoor air quality. SonoFlex ducting, with enhanced insulation in 100mm, 125mm and 150mm sizes, effectively reduces condensation risk by stabilising air temperature and limiting moisture build-up. This is particularly vital when ducting passes through unheated lofts or roof spaces in the UK’s cool, damp climate.

Condensation Risk Comparison

Dia / Length (mm / m) Start Temp (°C) End Temp (°C) Relative Humidity (%) Dew Point (°C) Airflow (L/s) Air Velocity (m/s) Risk Risk with SonoFlex
100 / 1.5 21.0 15.0 80 17.4 15 1.91 High Low
125 / 1.5 21.0 15.0 80 17.4 25 2.04 High Low
150 / 1.5 21.0 15.0 80 17.4 100 5.7 High Low
200 / 1.5 21.0 18.0 70 15.3 140 4.46 Medium Low
250 / 1.5 21.0 18.0 70 15.3 180 3.67 Medium Low
315 / 1.5 21.0 18.0 70 15.3 220 2.82 Medium Low

Disclaimer: Figures are illustrative. Actual results depend on installation conditions.

Temperature Regulation

Featuring 25mm Rockwool insulation with a thermal conductivity of ?0.04 W/mK, SonoFlex helps HVAC systems maintain stable air temperatures, reducing heat loss in winter and cooling loss in summer. This improves overall energy efficiency and comfort in line with UK regulations.

Temperature Deviation Performance

Duct Size (mm) Room Temp (°C) Winter (10°C Ambient) Summer (30°C Ambient)
100 21.0 -0.8 -0.3
125 21.0 -0.9 -0.4
150 21.0 -1.0 -0.5
200 21.0 -0.6 -0.2
250 21.0 -0.6 -0.2
315 21.0 -0.7 -0.3

Disclaimer: Values are theoretical estimates based on thermal conductivity ?0.04 W/mK.

Noise Reduction

The natural acoustic properties of Rockwool insulation within SonoFlex effectively absorb sound vibrations, significantly reducing ventilation system noise. This makes it ideal for noise-sensitive environments such as bedrooms, offices, and commercial premises.

Noise Reduction Performance

Dia / Length (mm / m) Velocity (m/s) Initial Noise (dBA) After Duct (dBA) Reduction (dBA)
100 / 1.5 1.91 50 40 10
125 / 1.5 2.04 52 42 10
150 / 1.5 5.7 55 43 12
200 / 1.5 4.46 57 45 12
250 / 1.5 3.67 59 46 13
315 / 1.5 2.82 61 47 14

Disclaimer: Noise values are theoretical. Actual results depend on installation.

Technical Specifications

  • Diameter Range: 100mm – 315mm (4" – 12")
  • Temperature Range: -30°C to +140°C
  • Thermal Conductivity: ?0.04 W/mK
  • Air Velocity: Up to 25 m/s
  • Max. Working Pressure: 2500 Pa positive
  • Standard Lengths: 5m & 10m
  • Colour: Metallic Silver
  • Insulation: 25mm Rockwool
  • Outer Jacket: Aluminium laminate

Applications

  • Moisture Control: Ideal for bathrooms, kitchens and wet rooms to prevent condensation and mould growth.
  • MVHR Systems: Minimises thermal bridging to enhance energy recovery efficiency.
  • Air Conditioning: Maintains stable airflow temperature, improving system efficiency.
  • General HVAC: Suitable for residential, commercial and industrial ventilation requiring insulation and noise control.

Why Choose SonoFlex?

With outstanding insulation, condensation resistance, and noise reduction, Blauberg SonoFlex Insulated Flexible Ducting is the premium choice for modern ventilation systems. It ensures compliance with UK regulations, delivers long-term efficiency, and is designed to perform in the UK’s demanding climate.

Note: To ensure compliance with UK Building Regulations, flexible ducting runs should not exceed 1.5 metres.

Data Sheet: Download Here

Shipping Notes
  • Free Standard Shipping on $100+ Orders to the USA.
  • Except Preorder products are shipped in 48 hours.
  • Delivery to the USA:
  1. Standard Shipping : 3-10 business days
  • If time is of the essence, please consider selecting expedited delivery for faster service.
Exchange/Return Notes
  • We offer a 30-day return/exchange service after receiving.
  • Final sale items are not eligible for returns or exchanges.
  • To process your return/exchange, please contact us at [email protected]
  • Please click here for more details>>> Return & Exchange Policy
SKU: 68588362856

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Michele D.
Lowell, US
★★★★★ 4
Good product, but...
Color: Dark Black, Size: 1 Pack
Easy to install. Like the product. The holder does not hold the phone position. It flops down alot.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on May 10, 2026
M
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Mary
Dallas, US
★★★★★ 5
The Perfect Phone Mount.
Color: Dark Black, Size: 1 Pack
It’s the perfect size, easy to install, and works perfectly. I have a 15 pro max iPhone, and it fits perfectly.
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Reviewed in the United States on May 14, 2026
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Verified Purchase
Darth Fader
Waukegan, US
★★★★★ 5
Well built and removes cleanly.
Color: Dark Black, Size: 1 Pack
Seems to be very solid and it was a little bit tricky to get it located on the vent blade properly, though that might just be due to the vents shape in my Highlander. I really like that it can be easily moved from one vehicle to another if needed without leaving adhesive residue like my last mount did. The only concern I have is whether the vent blade will support the weight long term. Time will tell I guess. EDIT: This fits all of the vents on my 2011 Highlander great. On my 2022 Highlander it will only attach to the center vents and then just barely hooks on after angling the vent blades enough for the hooks to grab. Even then the mount only makes contact at the very top and bottom of the vent opening. It works, but I wouldn't recommend it as ideal.
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Reviewed in the United States on May 22, 2026
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Verified Purchase
Fred
Dallas, US
★★★★★ 5
Works great
Color: Dark Black, Size: 1 Pack
Great product which is easy to use and affordable price.
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Reviewed in the United States on May 17, 2026
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Brad Sorrow
Houston, US
★★★★★ 5
Best phone holder I have ever purchased!
Color: Dark Black, Size: 1 Pack
Hands down the best phone holder I have ever purchased. The ones that stick to the windshield always end up coming loose. This attached to your vent and is super sturdy. Very easy to install and uninstall without making a mess on your window.
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Reviewed in the United States on April 27, 2026

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