MACO Laser/Ink Jet White Address Labels, 1 x 4 Inches, 20 Per Sheet, 500 Per Pack (ML-2025) Ideal for bulk mailings and identification Print in both laser and ink jet printers; Labels are guaranteed not to jam Bright white label stock produces sharp text and rich colors Acid-free for safe archiving; Lignin-free so labels will not yellow or become brittle over time Same template size as Avery 5261 and 8161. (Avery and the Avery product numbers are trademarks of Avery Products Corporation. DISCLAIMER: MACO is not affiliated in any way with Avery Products Corporation.)