Low Prices
Next Day Delivery
Large Stock
Basket £0.00
mm x

What is GSM and why is it important when buying envelopes?11th Aug 2015

What does GSM mean and what does it mean for your envelope buying? We have the complete GSM guide for you today!

GSM is an acronym meaning ‘Grams per Square Metre’ So this translates into how much a single sheet of paper measuring 1m x 1m weighs. Effectively the higher the GSM number, the heavier the paper.

What difference does GSM make for your envelope?

GSM affects the quality and durability of your envelope. If your envelopes were of a thickness of say 35-55gsm which is what most newspapers will commonly be printed on, you would find most of your post would never reach its destination! 33-55gsm is far to thin for use in the envelope trade and like newspapers would tear very easily. However if you used a thickness of 400 gsm this would be the typical thickness of card and would be far thicker than would be needed for everyday postal needs.

Now there are certain GSM ratings which will keep popping up when looking round large number of envelope suppliers, such as www.expressenvelopes.co.uk. Most envelopes will fall into these categories.

  • 70gsm to 80gsm

    These envelopes will be the cheapest available, however due to the thiness of the envelope they are not suitable for large amounts of content.

  • 90gsm to 100gsm

    This GSM range covers the paper thickness of the average envelope. Envelopes with this GSM is sturdy enough to withstand a bit of wear and tear.

  • 110gsm to 130gsm

    This is the thickness of our premium envelope range. You can feel the difference in your hand when you pick up the envelope which will make your mail stand out. This thickness also includes our  tear resistant envelopes which are highly durable and reliable. 
  • 140gsm to 180gsm

    This is the thickness of our handmade envelope range.  Our handmade envelopes are like your favourite comfort blanket, so tactile you can't put it down. We have found many people who recieve these envelopes reuse them!

Still Not sure of the GSm you require? - try our free sample service

As a premier online envelope supplier we are aware that selecting a paper weight without touching and feeling the paper can be a bit daunting. If you’re not in a rush for your envelopes why not try our free sample service? Just find the product you require a sample of and click on Request Sample.

Need your envelopes now? - We have Next Delivery

Dont have the time to wait for a free sample? Need your envelopes now? If you order with us your order will be delivered next day if you order by 2pm.

Why Choose Express Envelopes?

Express Envelopes are a premier online retailer of envelopes and copier paper with a huge range of over 1000 stock items. Order before 2pm you'll have it the next business day (excludes small packs and samples) , it's as simple as that.
Low Prices
Next Day Delivery
Large Stock

Express Envelopes is rated 4.81 stars by Reviews.co.uk based on 57 merchant reviews

4.81 / 5 Rating
57 Reviews
Ordered from France and delivery only took 2 working days. Envelopes good quality for the price.
There was a delay in receiving the envelopes from Express, but once I phoned and spoke to the lovely lady, she helped me out. In fact, the carrier had delivered them to the wrong address but the lady at express sorted it all out for me. Thank you Marie!
Very good quality self-seal product - delivered before 10.30 am the next day. excellent service, Thanks, David