The Envelope Tray Option This section describes how to install and remove the envelope tray in the optional
500-sheet paper tray. Note:   The optional 500-sheet paper tray must be installed before the envelope tray
can be installed. Acceptable envelope sizes and weights for the envelope tray are as follows: Envelope sizes Commercial #10 — 4.125 x 9.5 in. (104.8 x 241.3 mm) Monarch — 3.875 x 7.5 in (98.4 x 190.5 mm) DL — 110 x 220 mm (4.4 x 8.8 in.) C5 — 62 x 229 mm (6.48 x 9.16 in.) Envelope weights 16 lb to 28 lb (60 grams/meter² to 105 grams/meter²) Envelope tray
capacity 60 envelopes Chapter 7.   Installing Printer Options 141