supply of umbrella push trolley servey size 2210mm dia x 1930mm free height when opened wr specification no.115. , umbrella push trolley servey size 2210mm dia x 1930mm free height when o pened wr specification no.115. specification of umbrella for push trolley: specifications give n below dimensions: a common survey size is 2210 mm in diameter and 1930 mm in free height whe n opened. canopy: made of 100% polyester, often with uv protection. frame: typically has 8 ribs mad e of carbon steel or flat wire, or can be a collapsible/detachable design. handle: stainless steel is a co mmon material for the handle. [ warranty period: 30 months after the date of delivery ] ]