Telescopic Antenna Mast Down Guy Kits included here are that which comprise the Kits specified by various dated and current ROHN catalogs. Reference the Pre-Engineered Kit Packages in the Telescopic Mast (link in footer below) by Height to build or supplement your Telescopic Antenna Mast installation. 3-way Down Guy Kits are typically used for Ground based installations and 4-way Down Guy Kits are typically used for Roof based installations. Installations that are combination or hybrid and utilize substitution or additional structural components should be forwarded to and engaged by a Engineer qualified to make such determinations.