The 27 Ft. (8.3 m) Tower Kit includes a tower clamp/guy wire assembly and all necessary hardware and fasteners to erect a 27 Ft. tilt-up tower using Schedule 40 steel pipe or tubing with an outside diameter of 1.875".

Anchors and pipe or tubing are not furnished with the kit, so you have the flexibility to use the most appropriate components for the installation.
This kit includes galvanized steel cable, not stainless steel cable.
Fast Installation
No Gin Pole ( for 27 Ft. only)
No Winching
No Cement Base

Kit includes:

Base connector
Lower wire set 160 ft. (49 m) pre-cut
Base staples (2)
3/8 in. x 1 ½ in. Bolts (2)
3/8 in. Locknut (2)
Cable thimbles (4)
Cable clamps (8)
 
Pipe Needed (from suppliers)
 
24 ft (7.2 m) length for tower
6 ft (1.8 m) length for tower base
1-7/8 Steel Tubing
 
Pipe Requirements:
 
1 7/8 in. (47.5 mm) steel tubing
 
For pipe tube specifications please consider the wind speed resistance as the main mitigation factor in a relation tower height ( 27 Ft.) tube thickness and max win speed the tower will stand with no major impact on it.
.065 can stand up to 90mph (40 m/s) for a 27 Ft. tower
.090 can stand up to 100mph (44 m/s) for a 27 Ft. tower
.145 can stand up to 120mph (53 m/s) for a 27 Ft. tower
Air Wind Turbine Sitting and Positioning

The AIR wind turbine is designed to mount on tubing or pipe with a  nominal 1.875 – 1.900 inch outside diameter. This dimension enables  constructing a tower from a range of readily available materials including  1 1/2 inch Schedule 40 steel pipe and 2 inch SS-20 galvanized fence  tubing (0.090 inch wall thickness). Under no circumstances should plastic  pipe be used to construct a tower. The manufacturer has few tower designed in different range as  27 ft (8.3 m) Tower, 29 ft (8.8 m) Tower and 45 ft (13.7 m) Tower
 
The minimum recommended tower height is 25 ft (7.6 m) on open ground or 20 ft (6 m) above nearby obstructions. Try to locate the wind turbine in the “cleanest” turbulent free air as possible. Turbulence will reduce the efficiency of the wind turbine and may accelerate wear on rotating components.