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Description
Testo 420 Replacement Hood 610 x 1220mm
The Testo 420 replacement hood (610 × 1220mm) is designed for accurate volume flow measurement at large commercial diffusers and grilles. With an integrated flow straightener, it calms turbulent airflow before measurement — delivering high-precision volume flow results at outlets where standard square hoods fall short.
This hood mounts directly onto your existing Testo 420 volume flow hood base and comes with a carry bag. Not sure which hood size suits your diffusers? See our TAB commissioning guide or browse the full flow hood range at HVAC Shop AU.
Key Features
- 610 × 1220mm nominal dimensions — ideal for large rectangular diffusers and grilles
- Inner dimensions: 280 × 1195mm
- Integrated flow straightener for high-precision measurement results
- Minimum outlet requirement: 335 × 335mm
- Mounts directly to Testo 420 volume flow hood base
- Includes carry bag
Suitable For
- Large commercial HVAC balancing and commissioning
- TAB (Testing, Adjusting and Balancing) professionals
- Facility engineers auditing large-scale ventilation systems
- NEBB certified commissioning agents
What’s Included
- Replacement hood 610 × 1220mm (product no. 0554 4202)
- Carry bag
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