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Air Bar Zen 4 Airflow Tuning
Published 2026 · VapeWholesaleHub trade desk
Airflow tuning is the single adjustment that changes how Zen 4 feels in daily use.
Every serious sourcing conversation about the Zen 4 eventually arrives at airflow tuning, usually because it is where cost and risk meet.
Cash flow is the quiet constraint behind airflow tuning: the cheapest option is rarely the one that frees the most working capital.
Why airflow tuning matters on the Zen 4
Restricted airflow suits mouth to lung customers moving from traditional products.
Cash flow is the quiet constraint behind airflow tuning: the cheapest option is rarely the one that frees the most working capital.
Open airflow serves direct lung users who prioritise vapour volume.
Reference specification
| Item | Value |
|---|---|
| Model | Zen 4 |
| Brand | Air Bar |
| Category | Starter Kits |
| Battery | 900 mAh |
| Output range | 8-40 W |
| Capacity | 3.0 ml |
| Charging | Magnetic dock |
| Coil options | 0.4 / 0.6 ohm |
| Carton quantity | 50 units |
An adjustable ring lets one SKU serve both preferences and simplifies inventory.
Practical notes for buyers
In practice the decision comes down to three numbers: unit cost, freight per unit and the realistic sell through rate for Zen 4.
Where two suppliers look identical on price, airflow tuning is usually the variable that separates them over a full year.
Checklist
- Confirm the exact configuration in writing before the deposit is paid.
- Verify that artwork matches the approved compliance template.
- Review the reorder point after one full selling cycle.
- Log sell through by account for the first eight weeks.
- Agree in advance who pays for return freight on a defect claim.
- Keep certificates current and filed against the exact model name.
Commercial terms
Freight terms should be named explicitly, because an unclear incoterm is the fastest way to lose a relationship.
Agreeing a defect handling procedure before the first shipment removes emotion from later conversations.
| Volume tier | Indicative unit level | Lead time |
|---|---|---|
| Carton (83 units) | Tier 1 | 21-30 days |
| Pallet (828 units) | Tier 2 | 30-45 days |
| Container (5694 units) | Tier 3 | 14-21 days |
Frequently asked questions
Can airflow be adjusted on Zen 4?
Most current designs include a rotating ring or sliding switch; confirm the exact mechanism on the specification sheet.
What happens if a batch fails inspection?
The agreed procedure normally covers replacement of affected units or credit against the next order, documented before shipment.
Do you support long term supply agreements?
Yes, rolling agreements with defined review points work better for both sides than rigid annual commitments.
Can several models be mixed in one shipment?
Yes, mixing models and flavours within a carton or pallet is common and usually helps first time buyers test demand.
Final word
A short quarterly review of these points will keep the Zen 4 range healthy without consuming the week.
Trade enquiry
Quotations, samples and artwork files are available on request. Please state model, quantity per SKU, destination and target delivery window.