Home Improvement Hardware For Precision Installations And Professional Results

Contractor-Grade Leveling Shims, HVAC Registers, And Installation Tools Built For Real-World Conditions

FLI Products' Home Improvement & Hardware collection offers contractor-grade tools and precision hardware engineered for window, door, tile, HVAC, and general home improvement installations. Whether you're a professional contractor, a serious DIYer, or a homeowner tackling a renovation, every product here is designed to deliver professional-quality results with less effort, less rework, and more confidence. Built for real-world conditions and long-term performance.

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• Glazelock™ — Professional Leveling Shims

  Precision interlocking shim systems for windows, doors, tile, cabinetry, and glazing applications. Eliminates slipping, compression, and misalignment for a stable, repeatable setup every time. Available in plastic and composite options for a wide range of installation types. Made in USA.

• Sierra Grates™ — HVAC Floor Registers & Grilles

  Heavy-duty steel floor registers and return grilles engineered for improved airflow, durability, and a clean, modern finish. Resists bending, rust, and everyday wear. Compatible with hardwood, tile, carpet, and vinyl floors. Available in multiple sizes to fit standard vent openings.

Professional-Grade Hardware For Homeowners, Contractors, And Remodelers

From precision shimming for windows and doors to durable HVAC vent covers that last, FLI Products' Home Improvement & Hardware collection gives you the tools to do the job right the first time. Every product is built to contractor-grade standards — so your installations stay aligned, your airflow stays efficient, and your results look professional.