Donalco Double Hung Windows Sydney Northern Beaches   Double Hung Windows Sydney North Shore
Double Hung Windows Sydney Eastern Suburbs

Double Hung Windows

double hung windows

A Double Hung window is made of one or more movable panels that form a frame to hold panes of glass.

At Donalco our double hung windows are:

  • High performance all aluminium construction.
  • Available in a 65mm or 100mm frame.
  • 40mm wide sash stiles.
  • Concealed spiral balance operation.
  • Extruded sash lift to bottom rail.
  • Wide range of glazing options available including double glazed.
  • Will accept insect screen.
Double Hung Windows Sydney Northern Beaches

Donalco Windows Pty Ltd is an Australian owned company based in Brookvale, on Sydney's Northern Beaches, and has been established for over 45 years. Our management team has over 100 years of combined experience in the Window and Door industry

We design, manufacture and install high quality custom made Commercial Grade Aluminium Products, using only the finest quality materials and architectural hardware.

The name Donalco is respected and has a strong reputation for personalised service and delivering beyond expectation. Our aim is to provide superior products that bring together up to the minute contemporary style and design with functionality and durability.

We have our own suites of sections as well as a full range of extrusions and systems from which to design and build products of exceptional quality.


Phone: (02) 9938 5777


(02) 9905 0692



51 Chard Rd

Brookvale NSW 2100