These bags are BRAND NEW/NOS and measure 28 3/4 x 23 1/4" overall.

Mil-B-117F "Bags Sleeves and Tubing" covers heat sealable packaging bags sleeves and tubing for the protection of supplies during transportation and storage under all climatic conditions.
This is a bag making specification for barrier greaseproof and electrostatic free packaging.

Mil-B-131H "Barrier Materials Watervaporproof Greaseproof Flexible Heatsealable" establishes the requirements for heatsealable greaseproof flexible barrier materials having low water vapor transmission characteristics for use in packaging.
This is a general barrier material specification.

We have THOUSANDS of these bags in stock so if you want a Large Quantity please make a reasonable offer."