Houselabels 2-1/4 x 7-1/2 Inches Dymo Compatible 30384 2-Part Internet Postage Labels, 1 Roll, 150 Labels per Roll Please only purchase this product from HouseLabels. Others may claim that they sell this product; however, they do not unless the vendor is Amazon. If you are purchasing from another vendor, please consider that they are misrepresenting that they sell our product which should bring other issues into consideration about their business practices.We start with superior raw materials consisting of: (a) high quality direct thermal paper (80G/M2), (b) permanent acrylic adhesive, (c) white glassine release paper (60G/M2), (d) superb whiteness, and (e) water, grease and rub resistant paper. Labels are produced using the latest technology and undergo numerous quality control checks. Our certifications include ISO 9000/9001/9004/19011: 2000 and others. HouseLabels meets or exceeds OEM manufacturer specifications. Our labels will not damage your Dymo print head. We use state of the art glue technologies which conform to our stringent standards. Our labels are produced in a clean environment and immediately packed first into a protective polybag and then into an individual mini-carton to protect it from dirt, sunlight and scuffing.All HouseLabels products are BPA Free. BPA (bisphenol A) is an industrial chemical that has been used since the 1960s. Certain thermal paper may contain BPA. The National Toxicology Program at the Department of Health and Human Services says it has "some concern" about the possible health effects of BPA on the brain, behavior and prostate gland of fetuses, infants and children.Notice: HouseLabels does not sell DYMO-branded labels. "DYMO", "LabelWriter" and all other DYMO-branded product names and SKU trademarks are trademarks of DYMO Corporation. DYMO Corporation does not sponsor or endorse any products made or sold by House Labels. House Label branded products are manufactured by House Labels and ONLY sold by House Labels and Amazon Supplies. There may be other companies claiming to sell this product . House Labels stands behind their products with a 100% guarantee of satisfaction. When you look at reviews, please bear in mind that the review may be of a product (possibly an inferior product) manufactured by one of these companies and not a House Labels product. 2-1/4" x 7-1/4", Rectangle, White, Direct Thermal, BPA Free, Permanent-Adhesive, Fluorescent ink compliant with USPS regulations, 150 Labels per Roll These labels are 2-Part internet postage labels with recipient address and postage indicial label on one form. Fluorescent ink compliant with USPS regulations. DYMO Printers: 300, 310, 315, 320, 330, 400, 400 Duo, 400 Twin Turbo, 450, 450 Duo, 450 Turbo, 450 Twin Turbo, 4XL, EL40, EL60, SE300, SE450. CoStar Label Writers: XL, XL+, BC, BC+, TURBO, SE200, SE250, ACII 200 / ASCII 250