1. Non-Penetrating Roof Mount Low Profile for masts up to 2.25" - $84.00 | 2. 70 Ft Aluminum Heavy Duty Tower Kit HD 12-70 - $3,743.00 | 3. Beacon Top Plate For Universal Tower Top Section - $125.00 | 4. 3-1/2 OD x .188 wall x 5 Ft HDG Steel Pipe - $44.95 |