I've been poking around at loads for my Red Caboose Centerbeam flat cars and i was wondering what they meant by 4 or 5 lift lumber load. unfortunately i cannot post the link where i found it, however it was a Hay Brothers Garage model -NUTEY-
If a picture is worth a thousand words then the March 2006 page of www.nscaleloads.com is worth a small fortune.....and should answer your question too....