Letter Openers < Additional Mailroom Equipment Letter Openers Make quick work of processing incoming mail with these speedy envelope openers. Letter Opener 440 The LO 440 letter opener is the perfect solution for small to mid-size companies. Make quick work of processing mail with this efficient, automatic letter opener. Letter Opener 2112 The 2112 can open long runs of mixed-size envelopes at up to 24,000 pieces per hour. Letter Opener 306 The 306 offers the speed and features needed in high volume incoming mail centers.