Self-Seal Business Envelope, #10, 4 1/8 x 9 1/2, White, 500/Box

No moisture needed to seal, simply raise the lower flap and press. Unique double-flap design keeps the gum from sticking before use. Double flap keeps contents secure. Envelope Size: 4 1/8 x 9 1/2; Envelope/Mailer Type: Business/Trade; Closure: Self-Adhesive; Trade Size: #10.

Price: £ 32.64 from Zuma Office Supply US