Physical Dimensions: Overall (.a only, confirmed): 15 3/4 x 23 in. (40 x 58.4 cm)
Overall (.b only, confirmed): 16 3/4 x 23 in. (42.5 x 58.4 cm)
Overall (Previously assembed dimensions, ): 32 1/4 x 23 in. (81.9 x 58.4 cm)
Framed: 40 1/2 x 29 3/4 in. (102.9 x 75.6 cm)