Exodus 36:20-22

Amplified Bible, Classic Edition

²⁰ He made boards of acacia wood for the upright framework of the tabernacle.

²¹ The length of a board was ten cubits and the breadth one cubit and a half.

²² Each board had two tenons (projections) to fit into a mortise to form a clutch; he did this for all the boards of the tabernacle.