Flarespace
Flarespace was originally founded by Sonja Taylor, an employee of OutsideVan in Hood River, Oregon. She had seen European vans with side protrusions to widen the rear sleeping area, and developed that idea into a range of fiberglass body flares for North American vans like the Sprinter, Transit and ProMaster.
Today Flarespace is owned by Alabama van builder Storyteller Overland, and in addition to their camper van body flares, produces many other camper van products.