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Genius has a range of different systems which are the most practical and versatile on the market today. Generally, the system is comprised of a screen material (normally fiberglass insect screening) fixed to an aluminum center tube and to an aluminum sliding bar with which to pull the screen out of the housing. The screen is normally tensioned by a spring mechanism (hydraulic dampeners are also available) and so, upon release the slider bar and the screen returns to the housing, winding itself back onto the center tube ready for use again - safely hidden out of sight and harm's way. |