What Bottle Size and Neck Finish Should I Use for My Spray, Pump, or Child-Resistant Cap?
Introduction: It All Starts with the Right Fit
Choosing the wrong neck size or bottle height can lead to production delays, leakage issues, or worse—unusable inventory. If you’re planning to use a spray, lotion pump, or child-resistant cap, here’s what you need to know to avoid costly mistakes.
1. What Is a Neck Finish—and Why Does It Matter?
The “neck finish” refers to the threaded opening on the bottle that determines what kind of closure it fits.
Common finishes include:
- 20/410 – often used for mists or serums
- 24/410 – ideal for facial sprays or cleansers
- 28/410 – common for pumps and trigger sprays
- 38/400, 45/400, 53mm – often used for supplements, cleaning agents, or larger pumps
💡 The first number = outer diameter; the second = thread type/height
2. How to Choose the Right Bottle Size
For each closure type, bottle height and stability also matter. Here are general guidelines:
| Closure Type | Neck Size | Recommended Bottle Height | Typical Use |
|---|---|---|---|
| Fine Mist Spray | 20/410 | 100–150mm | Facial mist, toner |
| Lotion Pump | 24/410 | 120–180mm | Skincare, hair care |
| Trigger Spray | 28/410 | 150–200mm+ | Cleaning, pet care |
| CR Cap (Child Safe) | 38mm / 45mm / 53mm | 80–150mm | Supplements, herbal drops |
We can customize the height to match your pump length, avoiding waste or incompatibility.
3. Common Mistakes to Avoid
- Choosing a bottle that’s too short for your pump
- Selecting a neck size that doesn’t fit your cap supplier’s standard
- Assuming “24/410” from different factories are always the same—tolerance matters
We always recommend confirming with your closure supplier first, or sending us the cap for testing.
4. Do You Offer Matching Closures?
Yes. CPI can supply:
- Standard aluminum caps
- PP or PET sprayers and lotion pumps
- Electroplated, anodized, or matte finishes
- Child-resistant caps with foam or pressure liners
Or, we can help test your existing closures with our bottles to ensure perfect fit.
5. Let Us Help You Match Bottle + Cap
We’ve helped over 100 brands match the right aluminum bottles with pump, spray, and CR cap components. Whether you need just bottles or a full packaging solution—we can support.
Conclusion: The Neck Finish Is the Starting Point
A great formula deserves a perfect package. Let’s make sure your bottle and closure are fully compatible from day one. CPI offers technical support, samples, and mockups to help you get it right the first time.
👉 Need help choosing the correct bottle and neck finish? Get in touch with our team.
