5.   While pushing up on the end guide slightly, slide it to the desired envelope length. Then lower the guide until it locks into place. Note:   Use the notches on the bottom of the tray to set the envelope length. 6.   Load closed envelopes with the flap side up and the bottom edge of the envelopes toward the left side of the envelope tray.   Make sure the stack is under the roller
and the plastic tabs on the end guides. Note:   Loading too many envelopes into the envelope tray can cause paper jams. 44 User’s Guide