Wood box 11 1/8 x 50 7/8 x 9″ (28.2 x 129.2 x 22.7 cm), with three threads 39 3/8″ (100 cm), glued to three painted canvas strips 5 1/4 x 47 1/4″ (13.3 x 120 cm), each mounted on a glass panel 7 1/4 x 49 3/8 x 1/4″ (18.4 x 125.4 x 0.6 cm), three wood slats 2 1/2 x 43 x 1/8″ (6.2 x 109.2 x 0.2 cm), shaped along one edge to match the curves of the threads.