Install Smooth-Walled Replacement

What happens here

Although the actual installation process is not shown step-by-step, the video visually presents the improved plumbing configuration under the sink. The accordion-style pipe has been replaced with a conventional, smooth-walled P-trap and extension pipe. This 'upgrade' (as mentioned by the narrator) to a 1.5-inch smooth-walled extension is crucial for preventing future clogs, as it offers no internal surfaces for debris to latch onto.

Goal: Replace the removed corrugated pipe with a smooth-walled P-trap and extension. This ensures a clear pathway for water and prevents future clogs caused by trapped debris.