Slant Building Bi-Fold RetrofitSlant Sided Bi-Fold Retrofit Door Door Type: Slant Side Building Bi-Fold Door Door Specs: 24 ft x 14 ft 6 in PROJECT PHOTOS RELATED PROJECTS Retrofit Insulated Bi-Fold DoorPole Barn Bi-Fold RetrofitMaintenance Hangar Bi-Fold RetrofitAviation Hangar Bi-Fold RetrofitBi-Fold Aviation Hangar Door RetrofitAirplane Hangar Bi-Fold RetrofitBi-Fold Hangar Doors RetrofitSlant Side Building Bi-Fold RetrofitCurvet Quonset Bi-Fold RetrofitRetrofit Curvet Quonset Bi-Fold DoorCurvet Bi-Fold Retrofit DoorBi-Fold Machine Shed DoorRetrofit Quonset Bi-Fold DoorRetrofit Agricultural Bi-Fold DoorShop Retrofit Bi-Fold DoorAgricultural Retrofit Bi-Fold Door