These cages come complete with aluiminium and joiners - Joiner cages are more economical than ball cages
To calculate the the fleece/netting size add 1.8m to the length and 1.8m to the width (this allows for the height)
The netting is secured to the soil with pegs about every 1/2 metre. If you are using fleece you may need pipe clips as there will be increased wind resistance for details on pegs or clips click here