美国采购需求：化妆箱，化妆包，铝箱，航空箱，拉杆化妆箱，工具箱

I'm looking for a product with specific internal dimensions: the length should be 54 inches, the width 18 inches, and the height 4 inches. This will be crucial for my project, so I'd appreciate any options you might have that meet these requirements. Additionally, if you could provide details on the materials used, pricing, and lead times for production, that would be great. I'm eager to find a suitable solution that fits these dimensions and look forward to hearing back from you soon!