These C4 white gummed wallet envelopes with windows offer a smooth, high quality finish that caters for all your posting needs. With a gummed closure for a strong, reliable seal, our white envelopes are ideal for sending all your important documents from invoices to letter. Key features: Manufactured from high-quality 100gsm paper Eco-friendly; recyclable, biodegradable, compostable & PEFC certified Window Size: 105 x 40mm   Window Position: 24mm up – 71mm from the left   Paper Weight: 100gsm