Connect your ducts with no air leaks — the 125/100 mm plastic reducer makes a clean transition between two ventilation diameters in your indoor grow space.
BloomLED expertise, designed in France, indoor growing specialists for over 10 years.
Ø 125 / 100 mm · ABS plastic · Quick fit · Airtight connection
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When your extractor fan, carbon filter or ducting don't share the same diameter, the BloomLED 125/100 mm plastic reducer bridges the gap. Built for indoor growing, it converts a 125 mm connection to 100 mm (and vice versa) to keep a controlled, quiet airflow throughout your ventilation circuit.

| Feature | Detail |
|---|---|
| Diameters | 125 mm / 100 mm |
| Material | Rigid ABS plastic |
| Use | Joining ventilation ducts |
| Compatibility | Extractor fans, intake fans, carbon filters |
| Reference | REDUC-PLAST-125-100 |
Step a 125 mm duct down to 100 mm with no turbulence or loss of flow, for efficient air extraction inside your grow tent.
Slide the reducer between your ducts and secure with a clamp: no cutting, no special tools. Perfect for adjusting an existing setup in seconds.
Light but tough, ABS won't rust and handles the humidity of an indoor grow space for a long-lasting, airtight circuit.
Yes. It connects a 125 mm part (fan, ducting, filter) to a 100 mm part. It works both ways depending on your ventilation layout.
Do I need a clamp to install it?We recommend a clamp on each side for an airtight, rattle-free fit, especially if the extractor runs continuously.
A small accessory, a big difference: without the right reducer, a ventilation circuit loses airflow and gains noise. The BloomLED 125/100 mm reducer restores clean airflow for healthy crops.