In parallel, the market taxonomy distinguishes door types, each engineered to satisfy specific performance criteria. Lead‑glass sliding doors offer high transparency while delivering up to 10 mm lead equivalence, making them suitable for visual monitoring in medical and research settings. Concrete‑embedded sliding doors integrate dense aggregates within a concrete matrix, delivering superior attenuation for nuclear plant containment and defense bunkers, albeit with higher weight and installation complexity. Composite material sliding doors combine lightweight polymers with embedded metal foils, providing a balance of shielding efficiency and ease of handling, increasingly adopted in modular cleanroom expansions. Finally, hybrid multi‑layer sliding doors stack lead, polymer, and ceramic layers to achieve customizable attenuation profiles, supporting niche applications such as isotope production facilities. While type selection influences unit cost and installation logistics, the aggregate demand across these configurations aligns with the broader application segmentation, reinforcing the overall market size without overlapping the application‑only chart representation.