Top 8 Gusset Envelopes A3 UK – Envelopes

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1. UKPS

125 BROWN MANILLA GUSSET SPINED PEEL SEAL PAPER ENVELOPES MAILERS EXTRA LARGE XL A3 C3 SIZE 324x457mm + 30mm SPINE 140GSM SELF SEALING BOOK DOCUMENT STORAGE OFFICE POSTAL PACKING POSTAGE PACKAGING

UKPS - Size of envelope stated in product title in millimetres, and reads WIDTH opening end of envelope x HEIGHT of envelope. The height of envelope DOES NOT include the self seal lip. Sending large bulky documents. Gusset envelopes are ideal for storing and posting bulkier items. Storing documents / files all together. Peel & seal sealing offers ease of use and efficiency for large tasks. Dimensions of gusset is 30mm. Suitable for overprint. Gusset provides extra room for your documents. Envelopes made from 140GSM paper providing added thickness and extra quality.
BrandUKPS
ManufacturerUKPS
Part Number3695326473279

2. UKPS

125 WHITE GUSSET SPINED PEEL + SEAL PAPER ENVELOPES MAILERS EXTRA LARGE XL A3 C3 SIZE 324x457mm + 30mm SPINE 140GSM SELF SEALING BOOK DOCUMENT STORAGE OFFICE POSTAL PACKING POSTAGE MAIL PACKAGING

UKPS - Envelopes made from 140GSM paper providing added thickness and extra quality. Suitable for overprint. The height of envelope DOES NOT include the self seal lip. Dimensions of gusset is 25mm. Storing documents / files all together. Size of envelope stated in product title in millimetres, and reads WIDTH opening end of envelope x HEIGHT of envelope. Gusset provides extra room for your documents. Gusset envelopes are ideal for storing and posting bulkier items. Sending large bulky documents. Peel & seal sealing offers ease of use and efficiency for large tasks.
BrandUKPS
ManufacturerUKPS
Part Number3695639251861

3. Idena

Pack of 10, Brown, 4 cm Base, Idena 346096 Folding Envelope B4 Without Window, Peel and Seal

Idena - 4 cm base. Size: 250 x 353 x 40 mm. Format: B4. Pack of 10 peel & seal envelopes. Colour: brown.
BrandIdena
ManufacturerIdena
Height35.3 cm (13.9 Inches)
Length25 cm (9.84 Inches)
Weight0.36 kg (0.8 Pounds)
Width4 cm (1.57 Inches)
Part Number346096
Model346096

4. Blake

Blake Purely Everyday C3 457 x 324 mm 115 gsm Pocket Peel & Seal Envelopes 23872 Manilla, Pack of 125

Blake - Perfect for business correspondance, letters, brochures and more. High quality 115 gsm Paper. Secure peel and seal Closure for ease of use, added security and extra shelf life.
BrandBlake
ManufacturerBlake Envelopes
Height12 cm (4.72 Inches)
Length51 cm (20.08 Inches)
Width33 cm (12.99 Inches)
Part Number23872
Model23872

5. Triplast

Triplast 457 x 324 mm A3 C3 Manilla Hard Board Backed Envelopes Pack of 10

Triplast - A3 / c3 size 457 x 324 mm + Lip to seal. Manilla brown colour, solid back 115 microns thick. Model number: A3 C3. Triplast branded, self sealing peel and seal strip.
BrandTriplast
ManufacturerTriplast
Height0.2 cm (0.08 Inches)
Length32.4 cm (12.76 Inches)
Weight0.11 kg (0.25 Pounds)
Width45.7 cm (17.99 Inches)
Part NumberA3 C3
ModelA3 C3

6. Initiative

Pack of 50 Envelopes 16x12" Manilla Plain 115gsm Self Seal Large 408mm x 303mm Brown Envelope Pack

Initiative - Opaque 115gsm manilla material. 50 x plain envelopes 16" x 12" in size. Plain light brown colour. Ideal for large sized documents. Self sealing.
BrandInitiative
ManufacturerInitiative
Part NumberP2430B

7. Home Supplies Direct

25 x HSD C4 Gusset Envelopes Strong A4 Manilla 25mm Expanding Archive Width Peel & Seal

Home Supplies Direct - Fast dispatch!25 x c4 manilla gusset Envelopes Expanding A4. Please note image of Item May Vary Depending On Stock Batch. Approx 324mm x 229mm x 25mm. 115gsm manilla resists damage In Transit While Keeping Weight & Postage Costs Minimal.
BrandHome Supplies Direct
ManufacturerHome Supplies Direct
Part NumberC4-MAN-GUS-25

8. eposgear

VAT Invoice & Free Shipping, EPOSGEAR® 10 C3/A3 457mm x 324mm Brown/Manilla Strong Hard Card Board Backed Peel and Seal Printed Please Do Not Bend Envelopes

eposgear - Brand new high quality 120gsm manilla board-backed envelopes. Dimensions: width - 457mm. Envelopes read "Please Do Not Bend" in red text. Ideal for sending important documents and other items which require care whilst handling. Length - 324mm. Peel & seal function on the envelopes provide secure closure.
Brandeposgear
Manufacturereposgear
Part NumberBBEMC3