These are two of many crates of material for this job.  Material was delivered by freight directly to the site.  This is 50' of 28" round Model G chimney system.  It comes to us from Michigan via a local supplier in Randolph.  The pipe is installed in sections to make it more manageable at the top of the chimney.  This material is specific to venting an industrial gas boiler.  These particular boilers are the size of a locamotive steam engines.  This was to vent 2 of these boilers which provide the heat for the entire Fessenden School campus in Newton, MA.