Designed for ADP Payroll – Compatible with ADP “Run System” pay stubs, these double window envelopes ensure perfect alignment with payroll checks. Professional & Durable – Made from strong 24 lb white wove paper for a crisp, professional look that holds up through daily business mailings. Easy to Fill – Low-profile flap design opens wide for faster stuffing, saving time on bulk payroll processing. Secure Seal Protection – Traditional gummed flap activates with moisture to create a strong, permanent seal. Confidential Mailing – Dark security tint lining protects sensitive payroll details from being seen through the envelope. Our Blue Summit #10 double window security envelopes are specifically designed for ADP payroll checks, with windows precisely positioned for ADP “Run System” pay stubs. Each envelope is made from durable 24 lb white wove paper and features a low-profile flap that opens wide, making payroll runs quicker and easier to manage. The traditional gummed flap creates a secure seal once moistened, keeping documents safe during transit. Inside, a dark security tint ensures all payroll information remains confidential from sender to recipient. Perfect for high-volume payroll departments or small businesses alike, this 500-count box provides long-lasting value with the professional quality you can trust from Blue Summit.