22 with two projections set parallel to each other. They made all the frames of the tabernacle in this way.

Read Exodus 36:22 Using Other Translations

One board had two tenons, equally distant one from another: thus did he make for all the boards of the tabernacle.
Each frame had two tenons for fitting together. He did this for all the frames of the tabernacle.
with two pegs under each frame. All the frames were identical.