Product Specifications: ---Dimensions: 13" x 18" ---Thickness: 550 GSM Additional Details: ---The tear strip tab at the top allows for quick and convenient opening ---Self-sealing, peel, and stick, adhesive keeps contents secure tamper-proof ---Extremely durable and lightweight cardboard material helps save on postage ---Provides bend resistance ---Surface easily accepts ink, stamps, and labels ---Approved for USPS, FedEx, UPS, and DHL.
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