Get a Fast Quote
🛠️ Need the Right HVAC Tool for the Job?
Whether you're quoting a bulk order or chasing hard-to-find tools, we’re here to help.
Get a fast, personalised quote—no pressure, no spam!
Fill out the form below and we’ll get back to you ASAP.
📩 Request a Quote
Description
Testo 420 Replacement Hood (305 x 1220 mm)
Enhance your air flow measurements with this premium replacement hood for the Testo 420 Volume Flow Hood. Perfectly sized at 305 x 1220 mm, this accessory is designed specifically for accurate volumetric flow assessments at long, narrow air inlets and outlets. Equipped with an integrated flow straightener, this hood smooths out turbulent airflow to guarantee high-precision measurement results in complex commercial HVAC environments.
Your Advantages
- Perfect Fit: The 305 x 1220 mm dimensions are perfectly tailored to match linear slot diffusers and long ventilation grilles.
- High Precision: An integrated flow straightener physically tames turbulent air for exceptionally accurate volume flow readings.
- Durable & Portable: Comes complete with a heavy-duty carrying bag for safe and easy transport between commercial job sites.
- Seamless Integration: Attaches quickly and securely to your existing Testo 420 measurement base.
What It's For & Who It's For
Applications (What It's For)
This specific hood size is the ultimate solution for measuring volumetric flow at long, narrow linear slot diffusers. It is heavily utilized in commercial office spaces, cleanrooms, and modern architectural HVAC installations where standard square hoods simply cannot cover the entire air outlet properly.
Who It's For
Designed for commercial HVAC balancers, commissioning agents, NEBB certified professionals, and facility engineers who routinely audit large-scale commercial ventilation systems and demand uncompromised accuracy.
Tradie Pro Tip: Linear slot diffusers are notorious for throwing highly turbulent air that makes standard volume flow readings jump all over the place. The built-in flow straightener in this hood is an absolute lifesaver—it straightens and calms the airflow before it reaches the sensor matrix, saving you from bouncing numbers and ensuring your balancing report is dead-on accurate!
Delivery Scope
1 x Replacement hood for Testo 420 (305 x 1220 mm), including a durable carrying bag (Product no. 0554 4201).
Technical Data
| Parameter | Specifications |
|---|---|
| General Technical Data | |
| Nominal dimensions | 305 x 1220 mm |
| Inner dimensions | 280 x 1195 mm |
| Minimum outlet requirement | 335 x 335 mm |
| Flow straightener | Integrated |
| Compatibility | For Testo 420 Volume Flow Hood base |
Any question?
If we still haven't answered your question, you can contact us below and we will get back to you as soon as possible.
You may also like
Recently viewed
Popular Brands We Distribute
