Quick Frames has exceeded my expectations.  My experience starts with their representative Chase.  He is great to work with and extremely responsive.  Most importantly he does what he says he will do. QF is fantastic with digging into the drawings and determining exactly what is needed for supporting my  equipment.  They ship on time with their supports logically bundled and identified for location.  The installation instructions are spot on.  I have used them twice and both times the installation of Quick Frames went without a hitch.  I highly recommend them for support of roof equipment.