Triple-glaze greenhouse structure

摘要

A greenhouse is disclosed which has enhanced thermal insulative characteristics. The greenhouse includes an elongated, extruded support bar for supporting light transmissive, transparent or translucent panel members. In cross section, the support bar includes a generally vertical stand portion having a base and a crown. A laterally extending outer shelf is provided adjacent the crown for supporting an outer light transmissive panel member. A laterally extending inner shelf is provided adjacent the base for supporting an inner light transmissive panel member. A laterally extending middle shelf is provided between the outer shelf and inner shelf for supporting a middle light transmissive panel member. The inner and middle shelves are dimensioned to permit the inner and middle light transmissive panel members to be placed on the inner and middle shelves from inside the greenhouse.