Designed for commercial kitchens and drive-thrus, the QuikServ IFSC-4030 48" x 36" Dark Bronze drive-thru window combines durability, energy efficiency, and security. Its 1" clear insulated glass minimizes heat transfer and reduces outside noise, creating a more comfortable service environment. The weather-resistant sealing further limits air exchange, while the top-hung ball bearing system ensures smooth operation—critical for high-traffic drive-thrus. The dark bronze anodized aluminum frame resists corrosion, making it ideal for harsh restaurant environments. This manual single-slider window includes a maximum-security hook-bolt lock and automatic locking when closed, adding an extra layer of security. Whether you're outfitting a fast-food chain, café, or full-service restaurant, the IFSC-4030 delivers long-term reliability with a 1-year limited warranty. Its left-to-right operation (from exterior) and offset base design prevent water pooling, protecting both the window and service area. For restaurants prioritizing functionality, security, and energy savings, this is the drive-thru window solution.