Square Envelopes

Shop square envelopes in best-selling 150 × 150 mm and 155 × 155 mm, plus 100, 120, 130 and 140 mm sizes for wedding invitations, greetings cards and premium mailers. Choose premium white, natural manilla or vibrant colours with window-free faces for a clean presentation, and pick gummed, self seal or peel & seal closures. Heavier gsm and ultra-opaque options protect foiled cards and photographs. Use filters to refine by size, colour and seal, and save with box, outer and pallet pricing for regular post. Orders dispatch quickly from our UK warehouse with free UK delivery when you spend £50+. Need more capacity or protection? Pair with gusset or board back styles to keep corners crisp and contents flat.

Showing 176 products
White 90gsm Gummed V-Flap Envelope (130 x 130mm)
White 90gsm Gummed V-Flap Envelope (130 x 130mm)
£0.21 £0.26
On Sale
£0.21 £0.26
White V-Flap Envelope & Scalloped Card Pack
White V-Flap Envelope & Scalloped Card Pack
£4.60
£4.60
Silver Gummed V-Flap 120gsm Envelope (155 x 155mm)
Silver Gummed V-Flap 120gsm Envelope (155 x 155mm)
£0.35 £0.43
On Sale
£0.35 £0.43
Metallic Silver 100gsm Gummed V-Flap Greeting Card Envelope (155 x 155mm)
Metallic Silver 100gsm Gummed V-Flap Greeting Card Envelope (155 x 155mm)
£0.28
£0.28
Dark Grey 120gsm Gummed V-Flap Greeting Card Envelope (130 x 130mm)
Dark Grey 120gsm Gummed V-Flap Greeting Card Envelope (130 x 130mm)
£0.23
£0.23
Dark Yellow Gummed V-Flap 120gsm Envelope (130 x 130mm)
Dark Yellow Gummed V-Flap 120gsm Envelope (130 x 130mm)
£0.20
£0.20
Mid Green Gummed V-Flap 120gsm Envelope (140 x 140mm)
Mid Green Gummed V-Flap 120gsm Envelope (140 x 140mm)
£0.29
£0.29
Pale Blue Gummed V-Flap 120gsm Envelope (130 x 130mm)
Pale Blue Gummed V-Flap 120gsm Envelope (130 x 130mm)
£0.20
£0.20
Purple Gummed V-Flap 120gsm Envelope (130 x 130mm)
Purple Gummed V-Flap 120gsm Envelope (130 x 130mm)
£0.20
£0.20
Mid Green Gummed V-Flap 120gsm Envelope (130 x 130mm)
Mid Green Gummed V-Flap 120gsm Envelope (130 x 130mm)
£0.20
£0.20
Black Gummed V-Flap 120gsm Envelope (130 x 130mm)
Black Gummed V-Flap 120gsm Envelope (130 x 130mm)
£0.25
£0.25
Metallic Silver 100gsm Gummed V-Flap Greeting Card Envelope (116 x 116mm)
Metallic Silver 100gsm Gummed V-Flap Greeting Card Envelope (116 x 116mm)
£0.20
£0.20
Metallic Silver 100gsm Gummed V-Flap Greeting Card Envelope (130 x 130mm)
Metallic Silver 100gsm Gummed V-Flap Greeting Card Envelope (130 x 130mm)
£0.23
£0.23
Oyster 90gsm Gummed V-Flap Greeting Card Envelope (140 x 140mm)
Oyster 90gsm Gummed V-Flap Greeting Card Envelope (140 x 140mm)
£0.39 £0.47
On Sale
£0.39 £0.47
White V-Flap Envelope & Linen Card Pack
White V-Flap Envelope & Linen Card Pack
£6.12
£6.12
Fuschia Pink 100gsm Gummed V-Flap Greeting Card Envelope (116 x 116mm)
Fuschia Pink 100gsm Gummed V-Flap Greeting Card Envelope (116 x 116mm)
£0.31 £0.38
On Sale
£0.31 £0.38
Magnolia Gummed V-Flap 120gsm Envelope (140 x 140mm)
Magnolia Gummed V-Flap 120gsm Envelope (140 x 140mm)
£0.24
£0.24
Pale Green Gummed V-Flap 120gsm Envelope (130 x 130mm)
Pale Green Gummed V-Flap 120gsm Envelope (130 x 130mm)
£0.20
£0.20
Orange Gummed V-Flap 120gsm Envelope (130 x 130mm)
Orange Gummed V-Flap 120gsm Envelope (130 x 130mm)
£0.25
£0.25
Bright Blue Gummed V-Flap 120gsm Envelope (130 x 130mm)
Bright Blue Gummed V-Flap 120gsm Envelope (130 x 130mm)
£0.20 £0.25
On Sale
£0.20 £0.25
Sunflower Yellow British Made 120gsm Gummed V-Flap Envelope (155 x 155mm)
Sunflower Yellow British Made 120gsm Gummed V-Flap Envelope (155 x 155mm)
£0.30
£0.30
Kelly Green British Made 100gsm Gummed Envelope (155 x 155mm)
Kelly Green British Made 100gsm Gummed Envelope (155 x 155mm)
£0.16
£0.16
Metallic Gold 100gsm Gummed V-Flap Greeting Card Envelope (130 x 130mm)
Metallic Gold 100gsm Gummed V-Flap Greeting Card Envelope (130 x 130mm)
£0.44 £0.54
On Sale
£0.44 £0.54
Metallic Silver 100gsm Gummed V-Flap Greeting Card Envelope (140 x 140mm)
Metallic Silver 100gsm Gummed V-Flap Greeting Card Envelope (140 x 140mm)
£0.30
£0.30
White V-Flap Envelope & Hammered Card Pack
White V-Flap Envelope & Hammered Card Pack
From £6.12
£6.12
Navy Blue British Made 120gsm Gummed V-Flap Envelope (155 x 155mm)
Navy Blue British Made 120gsm Gummed V-Flap Envelope (155 x 155mm)
£0.30
£0.30
Oyster 90gsm Gummed V-Flap Greeting Card Envelope (130 x 130mm)
Oyster 90gsm Gummed V-Flap Greeting Card Envelope (130 x 130mm)
£0.35 £0.43
On Sale
£0.35 £0.43
Dark Green Gummed V-Flap 120gsm Envelope (140 x 140mm)
Dark Green Gummed V-Flap 120gsm Envelope (140 x 140mm)
£0.24 £0.29
On Sale
£0.24 £0.29
Burgundy Gummed V-Flap 110gsm Envelope (130 x 130mm)
Burgundy Gummed V-Flap 110gsm Envelope (130 x 130mm)
£0.23
£0.23
Pale Green Gummed V-Flap 120gsm Envelope (155 x 155mm)
Pale Green Gummed V-Flap 120gsm Envelope (155 x 155mm)
£0.29 £0.35
On Sale
£0.29 £0.35
White Peel and Seal 180gsm Window Envelope (220 x 220mm)
White Peel and Seal 180gsm Window Envelope (220 x 220mm)
£0.48
£0.48
Mint Green British Made 100gsm Gummed V-Flap Envelope (155 x 155mm)
Mint Green British Made 100gsm Gummed V-Flap Envelope (155 x 155mm)
£0.16
£0.16