Does a P-trap need to be directly under a shower drain, or can it be further down the line? - Quora
Oatey Round White PVC Floor Drain with P-Trap, Cleanout and Screw-In Drain Cover 427242 - The Home Depot
36 Inch Linear Shower Drain with Tile Insert Grate,SUS304 Stainless Steel Floor Drain with Ajustable Leveling Feet and Hair Filters,Apply to Any Applications for the need of Waterproofing and Drainage - Amazon.com