Window and door maker Pella got out of a jamb by offering its products through retailers. Originally Pella focused on upscale homeowners, builders, and designers, marketing its products through a network of distribution centers and high-end Pella Window Stores retail outlets. The company has expanded its market, allowing do-it-yourselfers to buy its ProLine windows and doors through building supply stores. Pella\'s products include sliding French and contemporary doors and awning, clad casement, and bay windows. Pella was founded in 1925 as Rolscreen Company (after its first product, a roll-up window screen).