All plumbing fixtures have drain traps—a curved pipe configuration that holds standing water to prevent sewer gas from rising up into your home.
What's a P-Trap?
P-Traps vs. S-Traps: What's the Difference? - MT Copeland
Stainless Steel P Traps, Sanitary Drain Products
The Role of P-Traps in Your Plumbing System
How to Replace S-Trap with a P-Trap
Oatey 2 in. Seal Drain for Showers and General Purpose 43745 - The
Pipe Slope: How To Slope a Short Trap Arm - Hammerpedia
DIY Plumbing Blog How to Clean a Drain Trap
Condensate drain in the crawlspace air gap with P-trap however
How To Remove The P-Trap With And Without A Wrench - Cowboy
Types of Drain Traps - Hofen Drain
My Dad told me about them!”: Drain interceptor traps
How To Install Sink Drain Yourself