SHAD BIG MOUNTING PLATE + SCREWS SHAD has three types of mounting plates for their large cases (SH48, SH50, SH58X, SH59X, TR37, TR48). Both are lightweight and have modern designs with high quality finishes, providing extra strength. Hardware is included for mounting on most SHAD top master fittings. D1B591PA: Big Mounting Plate made from polypropylene, reinforced with 30% glass fiber. Engineered to create a lightweight and durable base for your top case, reducing weight (almost 10% less) and adding strengthen through structural reinforcements such as recessed features and a honeycomb backside. Included with SH48, SH50, SH58X and SH59X cases. Optional for TERRA cases TR48 & TR37.