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Reclosable Plastic Bags
(800) 791-5183
FAQ
Frequently Asked Questions
   Zip Lock Bags
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  Plain 4 Mil.
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Customer Service
Our phone lines are staffed 24/7.
(800) 791-5183
We are also happy to answer questions by email.
info@customzip.com

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?
Can I order heavier bags?
Why no bags less than 2 Mil.?
Do you carry very clear zip bags?

How thick is 2 Mil.
2 Mil. = 50.8 Microns = .0508 Millimeters = 1/500 inch = .002 inches. The standard household Ziploc® sandwich bag is 1.5 Mil. The heavier freezer bags sold in stores are generally 3 Mil.  2 Mil. is the standard industrial strength thickness.

How thick is 4 Mil.
4 Mil. = 101.6 Microns = .1016 Millimeters = 1/250 inch = .004 inches. 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. A 3"x4" piece of paper would just fit inside a 3"x4" zip bag.

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

Are prices per 100 or per 1000 bags?
Prices are per 1000 bags.
Our Ultra Clear Lip & Tape bags are offered in lots of 100 or 1000.

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 Customzip.com are handled automatically by the Paypal secure computer system. Credit card numbers are not seen by the staff at Customzip.com. Paypal is a trusted online payment gateway which is used by millions of people each year. If there were ever any problems Customzip.com would assume full responsibility in handling the situation for you.

Can I order heavier bags?
Yes. Customzip.com occasionally fulfills orders for 6 Mil. zip bags. However, typically the next step beyond 4 Mil. is to move to vinyl bags.

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

Do you carry very clear zip bags?
Yes. Click here to view our selection.
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Toll Free: (800) 791-5183 |  info@customzip.com
 
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