The grate is the one part of your shower drain that people actually see and touch every day. Getting this right means picking the finish and style after everything else is decided — tile, fixtures, hardware — and then choosing the piece that ties it together.

Product Overview

The Schluter KERDI-DRAIN Classic Grate Kit 4" is the visible top assembly for a 4" KERDI-DRAIN installation. It includes the grate, frame assembly, and the height-adjustment components that let you dial the drain flush with the finished tile surface regardless of tile thickness. The Classic design features a clean, square stainless steel grate in the standard 4" square format — the most common residential shower drain size. Available in brushed stainless, chrome, and polished finishes.

How the KERDI-DRAIN System Works

The KERDI-DRAIN is a two-part system: the drain body (installed during rough plumbing and waterproofing) and the grate kit (installed during or after tiling). The drain body gets set in the mortar at rough height, KERDI membrane bonds to the fleece-covered flange to create the waterproof connection, and then the grate assembly snaps onto the body after tile is grouted. You can replace or upgrade the grate later without touching the plumbing or waterproofing.

Who Should Buy This

• Standard tile showers: The Classic 4" grate is the default choice for most residential shower builds. It's recognizable, clean, and coordinates with most fixture finishes.
• Matching brushed hardware: Brushed stainless coordinates with brushed nickel faucets, towel bars, and accessories without being an exact match — close enough to look intentional, different enough to not clash.
• Builders and renovators who want a straightforward finish: No complicated selection process. Pick the finish that matches the other fixtures, done.

Installation Notes

• This grate kit installs onto an existing KERDI-DRAIN body — the body must already be set, plumbed, and waterproofed before the grate goes on.
• The height-adjustment collar and lateral adjustment ring allow fine-tuning to tile thickness. The 4" Classic/Style frames adjust both vertically and laterally — useful when the drain body isn't perfectly centered after tile installation.
• Accommodates tile thicknesses from approximately 1/8" up to 1"+ depending on the grate assembly configuration.
• The grate snaps into the frame — no tools required for removal once installed. This allows cleaning and unclogging access without special equipment.
• A tamper-resistant screw option is available for commercial installations or where drain security is a concern.

Pro Tips

• Order the grate kit in the same session as the drain body, even if you don't install them at the same time. Finish availability changes — ordering both together ensures a match.
• The grate is removable for cleaning. Make sure it's fully seated when reinstalled — a grate that sits slightly high can catch feet and become a nuisance.
• For high-design showers where the drain should be invisible, look at the KERDI-DRAIN Tile Grate Kit — it's the same drain body with a grate cover you tile directly over.
• If the shower uses DITRA-HEAT for a heated shower floor, KERDI-DRAIN is the compatible drain — the waterproofing membrane bonds to the drain flange the same way.
• Matching the drain grate to the shower fixture finish matters more than most contractors realize. A chrome drain in a brushed nickel bathroom is a small thing that bothers homeowners every single day.

Grate Options at a Glance

• Classic (this kit): Square stainless grate, standard look, brushed/chrome/polished finishes
• Contour: Anodized aluminum in multiple colors — design-forward, coordinates with colored fixtures
• Trendline (CURVE, FLORAL, PURE): Decorative minimal-reveal grates for design-focused showers
• Tile Grate: Invisible drain — tile directly over the KERDI-laminated cover plate

What It Pairs With

• KERDI-DRAIN body (ABS, PVC, or stainless steel) — the drain body must be purchased and installed separately
• KERDI membrane — the waterproofing that bonds to the drain flange
• KERDI-SHOWER trays — pre-sloped shower bases that work with KERDI-DRAIN
• KERDI-DRAIN tamper-resistant screw — optional security accessory