: Documentation detailing material requirements, such as wood architrave trim or aluminum sashes used in historic or modern rehabilitations. Safety and Installation Guidelines For any doormaking or rehabilitation project:

A "two-sash" design generally refers to double-hung windows or specific door configurations (like storm doors or French doors) where two moveable panels (sashes) are used.

: For detailed architectural standards, refer to the Architectural Graphic Standards .

: Step-by-step instructions and technical drawings for building custom doors.

: Projects often must follow specific city codes, such as the NYC Housing Rehabilitation Standards .