Definition
The application of chemical compounds to wood that inhibit or slow the spread of fire. Fire-retardant treated (FRT) lumber is used for pallets in environments with strict fire safety regulations, such as pharmaceutical warehouses, data centers, and aircraft cargo holds. FRT lumber meets specific flame spread ratings and can be required by building codes or insurance underwriters for certain storage applications.
Related Terms
Treated Lumber
Wood that has undergone chemical or thermal processing to improve its resistance to decay, insects, fire, or other hazards. In the pallet industry, treated lumber refers to wood that has been heat-treated for ISPM-15 compliance, pressure-treated with preservatives for outdoor use, or treated with fire-retardant chemicals for fire-sensitive environments. The type of treatment determines the pallet's suitability for specific applications and regulatory environments.
Warehouse Pallet
A general-purpose pallet designed for use within warehouse and distribution center environments, optimized for racking, forklift handling, and conveyor compatibility. Warehouse pallets prioritize dimensional consistency, rackability, and durability for multiple use cycles. They are typically held to tighter quality standards than pallets used for one-way shipping, as they must interface reliably with automated warehouse systems and maintain performance through many handling cycles.
Racking
The practice of storing loaded pallets on elevated warehouse racking systems (pallet racks). Racking places unique demands on pallet strength because the pallet spans across the rack beams with its load weight concentrated on the supported edges rather than distributed across a flat floor. A pallet's racking capacity is typically its most demanding load rating, and not all pallets are suitable for racking. Rackable pallets must be specifically designed and rated for this application.
Weather Resistant
A characteristic of pallets or pallet materials that can withstand exposure to rain, humidity, temperature extremes, and UV radiation without significant degradation. Plastic, metal, and pressure-treated wood pallets offer inherent weather resistance, while untreated wood pallets are vulnerable to moisture absorption, mold, and decay. Weather-resistant pallets are essential for outdoor storage yards, open-air dock areas, and supply chains where pallets are exposed to the elements.
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