Schluter Kerdi Shower Kit 48 x 72 vs Schluter Kerdi 48" x 48" Shower Kit

Both are Schluter Kerdi all-in-one kits with the same membrane, band and drain flange, so the real choice is tray footprint. The 48 x 72 kit is a long rectangle for a walk-in or curbless-style shower with a center drain; the 48 x 48 kit is a square for a standard alcove or corner install. Build quality is the same family: bonded waterproofing over a foam tray, no mortar bed, and a 10-year limited system warranty on the larger kit. Owners and installers consistently praise the Kerdi system for leak-free, tile-ready results; the main complaints are the cost of the full system and the care needed to get the tray level and the drain centered.

• Choose the Schluter 48 x 72 Kerdi kit if your shower footprint is a long rectangle and you want a center drain with a curb included.
• Choose the Schluter 48 x 48 Kerdi kit if you have a square alcove or corner space and want a stainless steel grate with a cuttable EPS tray.