Marvin Bi-fold Door hardware used on individual panels 

Screw Holes: 1-11/16 inch  (43mm)

Spindle Diameter: 5/16 inch Square (8mm)

Spindle Length: 1-1/2 inch

Escutcheon Plate Width: 1-1/16

Escutcheon Plate Length: 2-3/8 inch  (60mm)

Marvin Colors: White, Dark Bronze, Matte Black and Satin Nickel