Joeseph h, is right on with his post above. It has been my experience that in the U.S. most forklift manufacterers have ceased giving written permission to most users for "man cages." If you buy 10 new lifts and as part of the deal you request a letter to use brand new, purpose built cages, you may get that request approved, if you have a fleet of old trucks and cages and ask if they are ok with you using them, good luck getting a letter from any manufacturer. I have seen OSHA recently warn customers in our area about cages, they want the letter from the manufacturer of every forklift that will lift the cages and also cages that are professionally built to the right standards, of they will cite the customer. I have advised all our customers to cease using all cages immediately unless they have a letter from the manufacturer, as it is just not worth the risk. As a side note, lifting people with forklifts in cages, if used properly should never be a safety problem. That being said there are injuries and deaths every single year because people simply do not use them correctly and many of the cages are home made and not properly built in the first place. In my opinion, for most customers buying the right Aerial Work Platform is their best move for lifting people safely.