With the MRCOOL DIY Coupler 1/2'' x 1/4'', you can connect 2 line sets together and extend the length of the lineset. You can add 2 x 16ft linesets together, 2 x 25ft linesets together, or a combination of 16ft and 25ft, 35ft, 50ft linesets together.
This does not come with communication wire.
Compatible with 6K, 9K, 12K & 18K Air Handlers.

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