ROHN JRM23855 Non Pentrating Ballast Roof Mount 2.375 in. x 10 ft. Mast
Mast Dimensions - 2“ STD. Pipe (2-3/8 O.D.) x 120”  ( 2 piece Mast 2-3/8" x 60" )
The JRM is a non-penetrating, 5' square ballast type roof mount that supports a 5’ pipe mast. This mast is extendable to 10’ with the 5' extension (included). The JRM is designed to receive up to 12 standard concrete blocks as ballast. The JRM is used in cellular, PCS, broadband and other applications. The base mount and mast pipe are Hot dip galvanized for corrosion protection and go together quickly.
Made in the USA!

Height and Antenna Loading capability are dependant upon ballast weight... You need to Consult an Engineer to determine the Load Bearing Capability of the roof that you are entertaining such an Installation. Please refer to the Chart (pdf link above) which is a great place to start in determining whether your circumstances qualify for such an installation. If you cannot find someone local to evaluate the registered plans for your Flat Roof Structure, ROHN may be able to put you in contact with someone who can.

Warranty Sheet