The Half Kits are sold without a DWV (drainage waste and vet) tee fitting, and without any 1½” precut pipe sections. These kits are normally purchased by contractors because they have the pipe and fittings in their stock. The Full Kits are sold with these items in the package, and are normally purchased when an installer doesn’t want to have extra pipe and fittings after the installation in completed. After installation, both kits look and operate the same way.
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