... : 40"x 8 ribs 3) Open diameter: 1. 8m, Open height: 2. 3m 4) Shaft: steel, Upper tube dia. 29mm, down tube ... coating.5) Ribs: steel, dia. 5mm; double ribs, powder coating 6) Fabric: 190T polyester 7) Various colors, designs, materials, sizes. 8 ...