Home Improvement & Hardware

Installation Shims, Floor Registers & Grilles

Find GlazeLock shims for compatible installation tasks and Sierra Grates registers and grilles for suitable HVAC openings. Choose by the specific application, dimensions, material, and installation requirements rather than appearance alone.

GlazeLock and Sierra Grates are partner brands offered by FLI Products. GlazeLock shims are Made in USA. Review individual listings for country of origin and model-specific details; this category is not a blanket origin claim.

Practical products. Made to last.

GlazeLock: Installer-Focused Shims

GlazeLock offers plastic shims developed around practical installer needs. Select a style and thickness suited to the window, door, glazing, or other application specified in the individual listing.

Features vary by design. Interlocking and snapping U-shaped features apply to relevant horseshoe shims; layered peel-apart and breakaway features apply to the corresponding designs. Do not assume every shim has every feature or that FLI carries every style manufactured by GlazeLock.

Check dimensions, support placement, load requirements, and compatibility with the assembly. Follow the window, door, or equipment manufacturer’s installation instructions. A shim alone does not guarantee permanent positioning, a perfect fit, or a professional result.

Sierra Grates: Floor Registers & Grilles

Sierra Grates offers registers and grilles in selected sizes and styles. Match the product type to your supply or return opening, and distinguish the duct-opening size from the cover’s outside dimensions.

Check insertion depth, surrounding clearance, mounting, material, finish, and any damper requirements. Flooring type alone does not establish fit. Choose using the actual listing and HVAC requirements rather than assuming every model is steel, rust-proof, or designed to improve airflow.

Before You Order

Measure the installation area, confirm the intended application, and compare the selected product’s specifications with the assembly requirements. For structural support, glazing, or HVAC questions beyond the product instructions, consult a qualified installer or relevant equipment professional.

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