E. Gerber 2 mil Mylite 13 x 13 Record Sleeves

Made from 2 mil thick Mylar D®. Dimensions are width x height plus flap. Flap can be folded over, tucked in, or taped closed.

The 2 mil sleeves are twice the thickness and 4 times the protection of 1 mil thick bags. The most popular Mylar sleeve.

Advantages of Mylar® Type D Compared to Commonly Used Plastics:
Resistance to diffusion of gases like oxygen, Carbon Dioxide, Sulfur Dioxide, etc. is 350 times greater than polyethylene.

Permanence. There is no noticeable change in storage-100 years when compared to 2 to 5 years for others.

Resistance to moisture, insect attack, fungus, mold, mildew, acid, oils, grease, and solvents is "excellent" compared to "fair" for others.

Strength and creep resistance is 10 times that of polyethylene, one-third the strength of steel.

Volatile Additions--Mylar® contains no dangerous plasticizers, slip additives, surface coatings, antioxidants, acid-hydrolysis compared to other commonly used plastics.