Pemko 3261 L-Shaped Aluminum Sill Nosing 2-1/4" x 1-1/2"

Pemko 3261 Series L-Shaped Aluminum Sill Nosing

The Pemko 3261 Series Sill Nosing is an L-shaped aluminum extrusion designed to cover concrete or wood sub-sills at door thresholds. At 2-1/4" wide x 1-1/2" high and weighing just 0.23 lbs per linear foot, it installs cleanly under a threshold using mastic adhesive — no complex fastening required. UL 4L10 listed. Available in Mill Finish Aluminum (3261A) and Dark Bronze Anodized Aluminum (3261D), in lengths from 24" to 185".

Features & Benefits

• L-Shaped Profile: 2-1/4" wide x 1-1/2" high — fits standard pre-hung door openings and provides full sill coverage.
• Flexible Lengths: 24" minimum to 185" maximum accommodates single doors through wide commercial openings.
• Lightweight Aluminum Alloy: 0.23 lbs per linear foot — easy to handle and cut on site.
• UL 4L10 Listed: Meets safety standards for threshold applications where code compliance is required.
• Conceals Sub-Sill Defects: Covers imperfections in concrete or wood sub-sills for a finished, professional appearance.
• Mastic Installation: Secured by adhesive and threshold pressure — fast, clean install with no exposed fasteners.
• Two Finish Options: Mill Finish Aluminum for standard applications; Dark Bronze Anodized for color-matched or architectural installs.

Technical Specifications

• Model: 3261
• Profile Shape: L-Shaped
• Width: 2-1/4"
• Height: 1-1/2"
• Weight: 0.23 lbs per linear foot
• Minimum Length: 24"
• Maximum Length: 185"
• Material: Aluminum Alloy
• Finishes Available: Mill Finish Aluminum (A), Dark Bronze Anodized (D)
• Installation Method: Mastic adhesive
• UL Listing: UL 4L10

Typical Applications

• Residential pre-hung door threshold installations
• New construction door finishing
• Renovation and retrofit projects — covers existing sub-sill defects
• Multi-unit housing and apartment turnover
• Light commercial entrance upgrades
• Institutional building maintenance (schools, healthcare, government)