Letter Openers < Additional Mailroom Equipment Letter Openers Make quick work of processing incoming mail with these speedy envelope openers. LO 440A The LO 440A letter opener is the perfect solution for small to mid-size companies. Make quick work of processing mail with this efficient, automatic letter opener. LO 210 The Series 210 is designed with small and medium mail-opening operations in mind. Ideal for operations processing between 200 and 2000 pieces per day. LO 410 The LO 410 is a compact but highly efficient tabletop letter opener, perfect for companies that frequently process mixed inbound mail. LO 306 The 306 offers the speed and features needed in high volume incoming mail centers.