: Retailers like The Home Depot and Lowe's often stock standard-sized sashes or can special-order them from major brands. Custom & Specialty Suppliers
Purchasing a replacement window sash depends on whether you need a brand-specific replacement for a modern window or a custom/salvage piece for a historic home. Major manufacturers like Pella , Andersen , and Simonton sell sashes directly or through authorized dealers for their specific window series. For custom-built wood sashes or "sash kits" that fit existing frames, specialized companies like Fenster and Strafford Window Manufacturing provide made-to-order options. Major Manufacturers & Retailers where to buy window sash
For older windows or specific architectural needs, custom manufacturers can replicate existing profiles. Window Sash Replacement & Windows Components | Fenster : Retailers like The Home Depot and Lowe's