Selection of fenestration assemblies (utilizing both window and storefront systems) can be challenging due to the number of ancillary components/accessories available-materials wit! different performance characteristics compared to the main fenestration element. For example, aluminum windows (and storefront systems) are often paired with extruded aluminum subsil and receptor assemblies to better accommodate the installed condition. However, while these accessories are, in many cases, offered by manufacturers as part of a system or assembly, they are typically independent components with unique characteristics, such as resistance to water penetration and thermal efficiency, many of whicl may not align with the performance expectatior of the overall assembly.
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