ROHN BRM640M Non-Penetrating Roof Mount with 4.00 inch OD x 4 ft Mast
Made in the USA!
Mast Dimensions - 3.5" STD. Pipe (4 OD) x 45-3/4"
This roof mount is able to support various Antenna EPA's depending on wind and Ballast load (see details). The base of the roof mount is 10' square with a 16" tray to fit concrete blocks, typically used as ballast. The base mount and mast pipe are Hot dip galvanized for corrosion protection and go together quickly.
Note: 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.