Milgard Ultra Series Review

1. Overview & Market Position The Milgard Ultra Series is the premium, top-of-the-line offering from Milgard Windows & Doors, one of the largest and most respected window manufacturers in the Western United States. Unlike their fiberglass (Trinsic), vinyl (Style Line), or aluminum lines, the Ultra Series is constructed from solid extruded fiberglass , combining the strength of structural aluminum with the thermal performance of wood.