GlazeGuard 250 is a composite panel for use as a glazing infill made by laminating two prefinished aluminum skins to a substrate of tempered hardboard. These panels are designed for use as a replacement or complement to glass in windows, storefront, modesty screens, railing inserts, etc. Similar in thickness to GlazeGuard 250 WR (both are 1/4"), these panels offer more impact resistance than the lightweight composition offered by the plastic core. GlazeGuard panels are installed in aluminum glazing/storefront channels (by others) typically on setting blocks and sealed using rubber gaskets. Since they are encapsulated on all four sides by this channel, no mechanical fasteners, adhesives, or moldings are used in the installation of these panels.