Definitions
Hem → A fold over the outside edge of metal to add rigidity, prevent cutting/slicing of hands when handling, & allows for tight connection of pieces @ Seam.
Pocket → The cavity where siding materials get tucked into in order to cover the end, bottom or top of material.
Flat-Lock → A locking system that utilizes a 180° bend + clips/cleats to Secure pieces of metal together.
S-lock → A locking System that utilizes adouble 180° Bend to secure pieces of metal together.
Return/Tab → A 90° bend to cover seam joint/Connection.
