Natural Ventilation for opening and closing High Level Windows is extremely effective and affordable. Our window control systems incorporate Manual and Electric controls for various Architectural specifications whether Commercial or Residential. The basis of our gear is the ARENS MDCR Manual Gearbox reknown for its robust strength and endurance of opening up to 6 windows with the popular Shaft and Lever system. As an alternative the MDCR manual gearbox can be replaced with an Electric 230 volt actuator for gymnasiums or similar heights. In addition to MDCR and Electric controls we also have access to leading range of actuators appropriate in meeting environmental conditions temperature sensors or tandem actuators opening wider heavy windows, or smaller windows with a slim line Chainwinder per sash offer pleasing aesthestics.We manufacture, supply and install.Our credibility and "Commitment to Quality Customer Service" is backed up with 16 years solid experience in this specialist industry.Use our toll free and free fax number, email: awdsltd@globe.net.nz or Terry 0274522839 to contact us for more information.