Cut the time it takes you to pay bills with these envelopes - just stuff, seal and send. They're designed to be perfect companions to your checks. Envelope is ideal for all business, professional and personal correspondence. Designed To Fit computer business checks, QuickBooks checks. Double Window, Security tinted for added privacy and confidentiality. Moisture activated gummed seal Premium 24 lb. - Color: White - Finish: custom designed for QuickBooks Perfect fit, so checks won't move in the envelope. Thick paper makes it really secured and confidential with flawless seal. Memo line and amount line are fully covered. Quality construction stands up in the mail. Reduce mailing delays - checks fit perfectly, so destination and return addresses don't slide out of view. Mailed with peace of mind: Tinted inside pattern keeps confidential information from showing through. Close every envelope quickly and cleanly with Strong-secure Gummed flap seal closure. Crisp, bright white wove stock enhances your professional image.