Within the Types segment, the market differentiates three core configurations of VHP transfer windows: single‑use, reusable, and modular systems. Single‑use windows, typically constructed from polymer films, represent roughly 40 % of sales, favored for low‑volume or high‑turnover processes where validation costs are minimized. Reusable windows, fabricated from stainless steel or high‑grade alloys, capture about 35 % of the market; they are preferred in high‑throughput environments such as large‑scale pharmaceutical manufacturing due to lower per‑cycle cost despite higher upfront capital. Modular windows, offering customizable geometry and integration with existing cleanroom infrastructure, account for the remaining 25 % and are gaining traction in facilities seeking scalability and rapid reconfiguration. Each type contributes distinct cost structures, lifecycle impacts, and validation complexities, which together shape the overall market dynamics and influence investment decisions across the application spectrum.