| 摘要 |
The disclosure herein describes a sectional type door formed of a plurality of adjacent hingedly connected sections; each section comprises a core of insulating material and, a pair of spaced elongated metal panel members adhesively bonded to the opposite main surfaces of the core. The top and bottom edges of the panel members define respective tongue and recessed areas with the tongue area being insertable in the recessed area of an adjacent section. One or more U-shaped retaining members are mounted to the top and bottom edges of the core and serve as retaining members for the top and bottom edges of the panel members. The configuration of the top and bottom edges of the panel members is such as to provide minimum air infiltration while allowing relative movement between two adjacent sections. The metal panel members are somewhat larger than the core member thereby defining opposite end cavities in which are received wood stiles. |
