This extra tough version of the standard Whisper Slider has been engineered to support even the heaviest doors under high traffic conditions. A heavy-duty motor/gearbox and medium stile door panels add extra strength. The HD GT 1175 can withstand even the toughest environments like in warehouses and coolers. This versatile system offers many options to accommodate your needs: extra wide openings for fork lifts and motorized carts, kick plates and leading edge guards to protect your doors from workplace damage, and FRP-type doors for clean room applications. The HD GT 1175 is suitable for single and bi-parting door configurations.