Create a large-format display without pushing the projector deep into the room. The Optoma ZK420UST uses a 0.25:1 ultra short throw lens to produce a 100-inch image from less than half a meter away, making it a strong fit for rooms where presenters need to stand close to the screen without casting shadows. With 4K UHD resolution and 4,200 lumens of brightness, it delivers the detail and punch required for executive presentations, collaboration, and visual content. This model is built around a DuraCore laser light source designed for 30,000 hours of maintenance-free operation, which helps reduce service interruptions and total cost of ownership in high-use environments. HDBaseT 3.0 adds flexible transport for 4K, HDR, and HLG content, giving AV teams a cleaner path for source distribution and room integration. OMS Cloud support further strengthens fleet management with centralized control, broadcasting, and reporting. For organizations that need a premium display experience in a compact footprint, the ZK420UST offers a compelling mix of brightness, image quality, and installation practicality. It is especially well suited to meeting rooms, huddle spaces, and education environments where wall space is limited but presentation quality cannot be.