The 2nd dimension is top to bottom measuring from below the zipper. The header above the zipper is approximately 3/4 and is not included in the size.The size is rough inside dimensions. Get images that make Supersized seem small. Showcase your items with Auctiva's. The item "1000 qty 10 x 12 Reclosable Clear Plastic Zipper Bags 4 Mil Heavy Duty" is in sale since Wednesday, September 18, 2019. This item is in the category "Business & Industrial\Material Handling\Packing & Shipping\Packing & Shipping Bags\Reclosable & Zipper Bags". The seller is "hometownsportsheroes" and is located in Denver, Colorado. This item can be shipped to United States, Canada, United Kingdom, China, Mexico, Germany, Japan, Brazil, France, Australia, Denmark, Romania, Slovakia, Bulgaria, Czech republic, Finland, Hungary, Latvia, Lithuania, Malta, Estonia, Greece, Portugal, Cyprus, Slovenia, Sweden, South Korea, Indonesia, Taiwan, South africa, Thailand, Belgium, Hong Kong, Ireland, Netherlands, Poland, Spain, Italy, Austria, Bahamas, Israel, New Zealand, Philippines, Singapore, Switzerland, Norway, Saudi arabia, Ukraine, United arab emirates, Qatar, Kuwait, Bahrain, Croatia, Malaysia, Chile, Colombia, Costa rica, Dominican republic, Panama, Trinidad and tobago, Guatemala, El salvador, Honduras, Jamaica, Antigua and barbuda, Aruba, Belize, Dominica, Grenada, Saint kitts and nevis, Saint lucia, Montserrat, Turks and caicos islands, Barbados, Bangladesh, Bermuda, Brunei darussalam, Bolivia, Ecuador, Egypt, French guiana, Guernsey, Gibraltar, Guadeloupe, Iceland, Jersey, Jordan, Cambodia, Cayman islands, Liechtenstein, Sri lanka, Luxembourg, Monaco, Macao, Martinique, Maldives, Nicaragua, Oman, Peru, Pakistan, Paraguay, Reunion, Viet nam, Uruguay.