Received my order of PF120's (Mann Lake) today. Having used the Dadant plastic 4.9 in trials and it not working so well, I can see why this design works so well for many. Don't like plastic frames, so I'm cutting off all the frames and putting the foundation into my wooden frames. Works just fine.
http://www.beesource.com/imgs/barry/pf120d.jpg
http://www.beesource.com/imgs/barry/pf120a.jpg
Used a piece of 3/4" plywood to set the frame on and run through the table saw leaving the bottom bar attached.
http://www.beesource.com/imgs/barry/pf120b.jpg
Fits nicely into a wooden frame.
http://www.beesource.com/imgs/barry/pf120c.jpg
Completed frame.

