This is a vintage Japanese architectural panels called Shoin Shoji and Shoin panel used at Shoin style room at Nihon-ma, traditional Japanese room with tatami from mid.1900's.
It is made of Hinoki (Cypress). Usually, connecting panels and ranma complete one picture but having a nice simple geometrical pattern, they can be displayed individually.
14 1/2"W x 33 1/2"H 1 1/4 per panel