Cumberland Strip Seal DL Envelopes – 80gsm White, 220 × 110mm, Box of 500

You're at the postbox at 4:45pm and half your letters have split open in the van. Or you're fumbling with a glue stick while the office waits. Sorted. These Cumberland strip seal DL envelopes close clean with a press of the flap — no licking, no waiting for adhesive to tack. 80gsm white paper that holds its shape through sorting and doesn't tear at the fold. 220 × 110mm is exactly what a standard A4 letter needs when folded in three. A box of 500 keeps your desk stocked without tying up shelf space for months. Add to cart when you're ready

• Strip seal closure — press the flap, no licking or glue needed
• 80gsm white paper that resists tearing through postal sorting
• DL size 220 × 110mm — fits a standard A4 letter folded in three
• Box of 500 for a solid office run without overstocking
• Cumberland range keeps sizing and finish consistent across orders