How do the plate sizes and extension options vary among the three models, and how does this affect their application?

The MVH308DE has an 18-inch wide plate, while the MVH408DE and MVH508DE have 20-inch wide plates. All models can be fitted with extension plates to increase their working width by up to 6 inches. The wider plates and extension options allow for greater coverage and flexibility in compacting different surface areas, making the MVH408DE and MVH508DE more versatile for larger projects.