OZPACK
Wholesale 10000pcs White 450 x 500 + 50mm Poly Mailer Envelopes - Ideal for E-commerce and Retail Shipping
Pickup available at 115 Silverwater Road
Usually ready in 1 hour
Try it before you buy a pack
Order 1 sample of this product. One $15 sample postage covers up to 3 different products.
Order a sample
One flat fee covers up to 3 different products, 1 pc each, Australia-wide. Add more from other product pages — postage stays $15.
- Ships from our Sydney warehouse in 1–3 business days
- Same stock we ship in packs — check size, strength and colour against your product
- Not sure between two sizes? Sample both — still $15
Sample fee is for postage and handling only.
At a glance
- Pack: 10,000 pcs
- Usable size: 450 × 500 mm
- Seal flap: 50 mm (450 × 550 mm overall)
- Film thickness: 60 µm
- Material: 100% virgin low-density polyethylene (LDPE)
- Colour: white outside, black inside (opaque)
- Closure: permanent self-seal strip, tamper-evident
The same mailer, packed for volume
These are the same 450 × 500 mailers as our 100–1,000 packs, packed in bulk for high-volume senders. They suit jackets, bulky knits, and folded towels and bedding.
- Buying fewer than 10,000? 450 × 500 packs from 100 pcs →
- See all wholesale packaging →
Wholesale questions
Need a different quantity?
Email sales@ozpack.com.au with the size and quantity you need.
Can I try them before ordering 10,000?
Yes. Order a packaging sample and test the fit on your own products.
Can I print my logo on these?
Yes. Custom-printed mailers start from 50,000 pcs. Request a custom quote →
Shipping & Returns Policy
Fast Australia-Wide Shipping 📦
Reliable delivery with Australia Post and Aramex
- Processing Time: 1 business day order fulfillment
- Carriers: Australia Post & Aramex for secure delivery
- Priority Processing: Contact us for urgent orders to expedite shipping
- Coverage: Nationwide shipping across Australia
Easy 30-Day Returns Policy ✅
Hassle-free returns for packaging supplies
- Return Window: 30 days from purchase date
- Condition: Items must be unopened and in original condition
- Return Methods:
Post Return: Ship items back to our warehouse
Drop-off: Return in-person at 115 Silverwater Rd, Silverwater NSW - Refund Processing: 2-3 business days after we receive returned items
Questions about shipping or returns? Contact our customer service team for assistance with your packaging supply orders.
Delivery and Pick up Options
Delivery & Pickup Options
Click & Collect - Ready in 1 Hour 🚀
Fast pickup from our Sydney warehouse
- Select "Pickup" at checkout
- Ready within 1 hour (Mon-Fri, 10am-4pm)
- Location: 115 Silverwater Rd, Silverwater NSW 2128
- Perfect for urgent packaging supplies
Australia-Wide Delivery 📦
Reliable shipping across all states
- Standard: 2-7 days Australia-wide
- Express: 2-4 days to major cities
- Shipping costs calculated at checkout
- Same-day dispatch for orders before 11am weekdays
Need help? Contact us for urgent collections or delivery queries.
Wholesale pricing
Buying in bulk?
Pay wholesale prices.
Our best-selling boxes, satchels and bags at wholesale prices, straight from Sydney stock.
Free click and collect in 1 hour, Silverwater
Your logo on it? Custom boxes from 2,000 pcs
Eco-Friendly Packaging
Sustainable Features
View Other Products
Frequently Asked Questions (FAQs)
Can someone else pick up my Click & Collect order?
Yes! Just ensure they have the order confirmation email and a valid ID.
How will I know when my order is ready for pickup?
You’ll receive an email notification once your order is ready. It’s typically within 1 hour!
Do you deliver on weekends?
Sorry. Australia Post does not deliver on weekends
What if I’m not home for delivery?
Our couriers will leave your package in a safe place, or you may need to collect it from your local post office.
