Perspective Multi-Slide Vinyl Patio Door

Written by BuildSpec from facts published on Ply Gem's own product page; not Ply Gem marketing copy. The code-relevant content of this row is the phrase "Missile D level of impact resistance and HVHZ certifications" — a named missile level from the ASTM E1996 classification scheme, which is the standard IBC 2021 1609.2 and IRC 2021 R301.2.1.2 both name for windborne-debris opening protection. It is the first product in this library to carry an E1996 missile designation, and the linkage note below is explicit about the one step in it we cannot complete from held text.