Patent ID: 7140154

Claim:
In combination with a double panel set including a frame defining an opposed pair of jambs extending between an upper header and a lower threshold, primary and semi-active panels hingedly supported respectively by said pair of said jambs, an astragal disposed at a free side edge of said semi-active panel and defining a stop surface for engagement by a free side edge of said primary panel when said primary and semi-active panels are in a closed position, and weatherstripping carried at the bottom edges of said primary and semi-active panels for engaging said threshold when each of said panels is in the closed position, an astragal boot comprising: a boot body at a lower end of said astragal, said boot body carrying at least one fin projecting downwardly therefrom for engaging said threshold when the semi-active panel is in a closed position for substantially closing a gap between adjacent ends of said weatherstripping carried at the bottom edges of said panels when said panels are in the closed position; said at least one fin comprising a pair of fins carried by said boot body in generally spaced-apart, substantially parallel relation to define a recess therebetween for receiving and supporting an adjacent end of the weatherstripping carried at said bottom edge of said semi-active panel.