The KERDI-DRAIN-F is Schluter's retrofit bonding flange — designed to add KERDI waterproofing capability to an existing clamping-ring drain without ripping it out.

If you've got a standard 2" clamping-ring drain (the kind that squeezes a vinyl liner between a flange and a ring), this adapter flange sits on top and gives you the fleece-covered bonding surface you need for KERDI membrane integration. Works with both ABS and PVC clamping-ring drains.

• Retrofit bonding flange for existing 2" ABS/PVC clamping-ring drains
• Adds KERDI membrane bonding capability without drain replacement
• Fleece-covered surface bonds with thin-set mortar
• Saves time and money on renovation projects

Pro Tip: The KERDI-DRAIN-F is a renovation game-changer. Instead of tearing out the existing drain (which means tearing up the subfloor), you adapt what's already there. If the existing drain body is in good condition, this is the smart move.