Our C4 white peel and seal pocket envelopes with windows are made from 120gsm, high-quality paper and are perfect for sending all your important documents. Boasting excellent eco credentials, these envelopes are recyclable, biodegradable, compostable, made from sustainable sources and are PEFC certified. Key features: Made from high-quality 120gsm paper Peel & seal closure for a strong, reliable seal Window Size: 40 x 105mm   Window Position: 214mm up – 24mm from the left   Paper Weight: 120gsm