DIMENSIONS: Standard #10 business envelope measuring 4 1/8" x 9 1/2", perfect for professional correspondence including invoices, checks, and statements WINDOW SPECIFICATIONS: Left-positioned window measuring 1 1/8" x 4 1/2", placed 7/8" from left and 1/2" from bottom for clear address display SECURITY FEATURES: Interior security tinting provides confidentiality for sensitive documents, paired with 24lb white wove paper for durability CONVENIENT CLOSURE: Peel & seal adhesive strip ensures quick, clean, and secure sealing without moisture QUANTITY & USAGE: Pack of 100 envelopes ideal for high-volume business mailings, perfect for offices, schools, and professional settings Streamline your business correspondence with these professional #10 window envelopes. Measuring 4 1/8" x 9 1/2", these envelopes feature a convenient left-side window (1 1/8" x 4 1/2") positioned 7/8" from the left and 1/2" from the bottom, eliminating the need for manual address labeling. Crafted from premium 24lb white wove paper, these envelopes provide a crisp, professional appearance while maintaining document security through interior tinting. The peel and seal closure system offers quick, efficient sealing for busy offices. Perfect for invoices, statements, checks, and standard business correspondence, these envelopes deliver both functionality and professionalism. Each box contains 200 envelopes, ensuring you have plenty on hand for your business mailing needs.