Quality Park Flap Stik Security Tinted #10 Window Envelope, 4 1 2" x 9 1 2", White, 500 Box Lanterns These GBC black opaque plastic 6455160PK These GBC black opaque plastic binding system covers are made to work with most non thermal plastic wire binding machines ): 128 Capacity in Gallons: 1 Chemicals Features: Phosphate Free Cleaner Form Factor: Liquid Cleaning Chemical Type: Toilet & Bathroom Cleaner Concentrated or Ready To Use: Ready to Use Disinfectant: No Dispenser Required: Dispenser Not Required FDA Compliance: Non FDA Compliant Natural: No Next Day Delivery: Yes Pack Qty: 4 Primary Active Ingredient: Citric Acid Product Scent: Citrus True Color: Aqua 5 Pack Qty: 500 Paper Weight in Pounds: 24 Security Tint: Security Tinted Series or Collection: Flap Stik True Color: White Width in Inches: 4 #10 window security tinted business envelopes for standard mailing