About Us

Masonbox is your complete source for all your mailing box needs. We stock several styles of mailing boxes including the MailMaster mailing box, Universal Sealing Flap Box, Extra-Strength Utility Box, Econochip Utility Box and Medical/Lab boxes.

For all on-line orders, Masonbox.com offers:

Shipping within 48 hours
The highest quality
The lowest prices…Why Pay More!

Mailing Boxes: 

MailMaster Mailing Box: Features rounded reusable wire fasteners, and is ideal for Parcel Post, UPS, & Federal Express. No taping is required.

Universal Sealing Flap Box:
 Features four sealing flaps on the bottom for secure mailing. Eliminates wrapping, tying and taping. Tamper evident protection and meet U.S. Postal Service regulations for Registered Mail.

Extra-Strength Utility Boxes: Sturdy .044 gauge cardboard for extra strength and rigidity. Telescoping two-piece construction with thumb cuts for easy opening.

Econochip Utility Boxes: Ideal for storage or inner shipping cartons. Made with super-strength cardboard and reinforced-taped corners

Shipping Supplies: 


Econokraft Corrugated Shipping Cartons: Strong 200 lb. test kraft corrugated boxes for shipping and storage. Made from recycled materials, and meets all applicable freight classifications and government specifications. 

Medical/Lab Boxes:

Medical Vial Mailing Boxes: Specially designed for safe secure transit of standard size medical vials.

Paraffin Block Storage Boxes: Sturdy low-cost corrugated construction protects tissue blocks and organizes specimens.