Opal’s Product Range


KRAFT PAPER MAILING BAGS
CORRUGATED BOOKWRAPS
SOLID BOARD MAILERS
CORRUGATED POCKET ENVELOPES
WHITE ALL BOARD ENVELOPES

We manufacture and stock the sizes below.
Let us know your requirements, samples available on request.
If Bespoke sizes or Print required this can be arranged.

KRAFT PAPER MAILING BAGS

We call these paper mailing bags Expandelopes. They are manufactured using a strong FSC 140gsm recycled Kraft. Expandelopes have a 25mm capacity and a hot melt peel and seal on the flap.

Simple and efficient mailing bag,
Expandelopes do the job at an excellent price point”

CORRUGATED BOOKWRAPS

Manufactured using recycled corrugated board these flexible capacity wraps allow for ease of posting books and other items. We produce with a hot melt peel and seal on the flap with an easy open zipper perf, meaning they are plastic free.

“An environmentally sound choice of packaging”

SOLID BOARD MAILERS

Manufactured using FSC 400gsm recycled brown board these lightweight but sturdy mailers ensure your documents arrive in first class condition. They have capacity creases within the body of the envelopes that allow them to extend up to 40mm. They are produced with a hot melt peel and seal on flap and an easy open paper ripper tape.

“Lightweight and durable postal packaging product.
Plastic free, now with paper ripper opening strip”

CORRUGATED POCKET ENVELOPES

Manufactured using recycled E flute corrugated board these lightweight but strong pocket envelopes ensure your product travels with the ultimate protection. We produce with a hot melt peel and seal on flap and an easy open red ripper strip.

A postal packaging product that matches the top brands for quality
but beats them on price

WHITE ALL BOARD ENVELOPES

These pocket envelopes are produced using a 350gsm/480micron recycled grey board which has a white clay coating to the outer. Strong and durable they give full protection with a quality appearance. They also have an easy opening red ripper strip.

When you need that extra protection a paper envelope can’t supply”

Size And Weight Help Guide

We can advise when choosing a packaging solution that meets the needs of your business and your budget.

When choosing your postal packaging product it’s worth considering how much it will cost to post. The postal products we manufacture are covered in the four categories below. If you require pricing for any of the categories we recommend the following website www.royalmail.com/price-finder

The below are useful guidelines to follow, but call us on 01902 791212 or email sales@opalenvelopes.co.uk if your unsure.

1.Letter Max Weight 100gsm Max Length 240mm Max Width 165mm Max thickness/depth 5mm
2. Large Letter Max Weight 750gsm Max Length 353mm Max Width 250mm Max thickness/depth 25mm
3. Small Parcel Max Weight 2kg Max Length 450mm Max Width 350mm Max thickness/depth 160mm
4. Medium Parcel Max Weight 20kg Max Length 610mm Max Width 460mm Max thickness/depth 460mm

Benefits Of Using Opal Envelopes


The material used for our packaging is 100% recycled


Reduce your carbon footprint by using a UK manufacturer


Experienced staff, experts in bespoke envelopes and postal packaging


We provide a rapid response to your questions or quote requests


We work in partnership with you, providing long term support and trust

Opal’s Trade Only Business Ethos
Means


  • No mention of Opal on any delivery documentation or vehicles.
  • No mention of Opal on any outer boxes or labels. All our products are unbranded.
  • We will never sell directly to the end user through our website or sales teams.
  • No mention of Opal on any artwork proofs or samples.

This ethos is our biggest selling tool. It will never change.