Exodus 26:18 specifies the number of frames (twenty for the south side) that this verse introduces making.

Exodus 26:22-29 gives detailed instructions for the frames, bars, and rings, continuing the same construction.

Exodus 25:5 lists acacia wood as a material; the frames here are made of that same wood. Direct material link.

Exodus 36:20-33 details the actual construction of the acacia wood frames, fulfilling the instructions given here.

Exodus 40:18 explicitly states Moses set up the frames, directly executing the command to make them.

Numbers 3:36 explicitly mentions the frames of the tabernacle as part of the Merarites' charge—direct reference.