Rapid Recess Large Foam Filler Kit (RRFKL) — for 40"–72" Linear Drains

The Rapid Recess Large Foam Filler Kit is designed to simplify curbless shower builds using longer linear drains by providing purpose-fit filler components that help establish the correct recessed transition. Built for linear drains 40" to 72", this kit supports above-joist installation on wood subfloors to maintain structural integrity while achieving the consistent recess depth required for true zero-entry designs.

Key Selling Points

• Sized for long linear drains (40"–72"): Purpose-built for larger linear drain layouts in remodels and new builds.
• Above-joist installation: Designed to install above joists to preserve framing integrity and reduce complicated carpentry.
• Consistent recess depth: Creates an 11/16" recessed floor height within the lowered area for proper shower base elevation.
• Broad wood-framing compatibility: Intended for use across different joist types, widths, and orientations.
• Durable bracket construction: Uses 16-gauge galvanized steel brackets for long-term stability.
• ICC code compliance: Supports code-compliant installation requirements for dealer and contractor programs.
• Eliminates extra framing steps: Reduces the need for ledger boards or cross-bracing in the linear drain zone.

Coverage

• Fits an area of 25 sq ft or less (for 40"–72" linear drain applications)

Kit Contents (RRFKL)

• RRLDFL – Large drain filler left (Qty 1)
• RRRDFL – Large drain filler right (Qty 1)
• RRSL – 1/4" large shim (Qty 2)
• RRW – Sloped wedges (Qty 4)