10 Security Tinted Self-Seal Envelopes - No Window - EnveGuard, Size 4-1/8 X 9-1/2 Inches - White - 24 LB - 100 Count (34100) : Amazon.co.uk: Everything Else
10 Double Window Security Tinted Envelopes with a Self Seal Closure Designed for Standard Business Mailings, 24 lb. White Wove, 4-1/8 x 9-1/2, 500 per Box