A Fourth Generation Family Business Delivering High Quality Since 1934. Improve the resale value of your home project. Energy efficient timber windows & doors. Duce is a 4th generation business est 1934. Kind: Bi-Fold, Concertina, External, Folding, French, Hopper, Internal, Louvre, Multi-fold, Patio, Pivot, Pre-hung, Sliding. Material: Cedar, Glass, Timber. Style: Contemporary, Federation, Heritage, Period. Service: Consultations, Design, Installation, Joinery, Made to Order. Type: Commercial, Residential. Brand: Alfresco. Payment Concern: Factory Direct. Assurance: Australian Made