This Agra Tech, Inc. strong, low profile quonset roof structure is excellent for almost every crop and performs very well in extreme climates. This structure may be covered with single poly, double poly, corrugated SPS Dynaglas, 8mm SPS Thermaglas or shade cloth. Exterior trim is maintenance-free extruded aluminum. This is one of the strongest and most economical gutter connect structures available. Clear-span standard widths available include 18′, 21′, 24′, 27′ and 30′. Standard eave heights are 8′, 10′ and 12′. The Insulator is a popular choice with a built-in shade / energy shield system option, condensate control roof purlins, dependable strength and the ability to provide easy, cost effective gutter-connected expansion in the future.