OKI 1624n MFP Manual De Usuario

The duplex unit adds the function of two sided printing and  enables 
booklet printing. The duplex unit slides straight into the rear of the 
printer and requires no tools to install.

The duplex unit handles:

• Paper sizes letter, legal-14, legal-13.5, legal-13, A4, A5, B5, custom.

• Paper weights from 20 to 28 lbs. US Bond

(42 to 58 lb. Index, 75 to 105 g/m² metric).