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Topics & Questions
How thick is 2 Mil.
How thick is 4 Mil.
Size specifications
How accurate is sizing?
Are prices per 100 or per 1000 bags?
When will my order ship?
Water resistance of Zip® bags
Is it safe to order online?
Why no bags less than 2 Mil.?
Do you carry very clear zip bags?
Do you carry archival bags?

How thick is 2 Mil.
2 Mil. = 50.8 Microns = .0508 Millimeters = 2/1000 inch. The standard food storage bag is 1.5 Mil or less. The heavier freezer bags sold in stores are generally 3 Mil.
2 Mil. is the standard industry thickness.

How thick is 4 Mil.
4 Mil. = 101.6 Microns = .1016 Millimeters = 4/1000 inch. 4 Mil bags are twice as thick as the 2 Mil. bags and considered heavyweight.

Size specifications
On the product listing pages the first number (W) is the width of the bag, the second number (H) is the height. The width measures the size of the bag's opening. The height is the distance from the zipper to the bottom of the bag. In other words, the dimensions are approximately equal to the inside dimensions.

How accurate is sizing?
The size allowance for Zip® bags is +/- 1/8 inch.

Are prices per 100 or per 1000 bags?
With very few exceptions, our bags are sold and priced per thousand.

When will my order ship
99.5% of orders are shipped within one business day.

Water resistance of Zip® bags
No plastic bags are waterproof. Left in contact with excess humidity or water, moister will eventually build inside all standard LDPE plastic bags.

Is it safe to order online?
All credit card transactions placed with GTBAG are handled automatically by the Paypal secure computer system. Credit card numbers are not seen by the staff at GTBAG. Paypal is a trusted online payment gateway which is used by millions of people. If there were ever any problems GTBAG would assume full responsibility in handling the situation for you.

Why do you not carry bags less than 2 Mil.?
2 Mil. is considered the minimum guage for which the zipper can be molded as one piece with the bag. For zipper bags less than 2 Mil. the zipper must be laminated on - this results in a noticeable loss of strength.

Do you carry ultra clear Zip® bags?
Yes. Click here to view our selection.

Do you carry archival bags?
Yes. Our bags are perfect for storing and preserving your photos, collectables, and artwork. View our complete selection of bags.


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