http://www.usa.canon.com/cusa/support/professional/projectors_visualizers/projectors/lv_7290?pageKeyCode=writeReviewPage
LV-7290
22135
Features
Reduced and Simpler Maintenance
Longer Lamp Life
The extended lamp life of the LV-7290, with up to 4,000 hours in Normal Mode and 6,000 hours in Quiet Mode possible, lowers operating costs and reduces maintenance.
Longer Air Filter Life
Employing three-layer hybrid filters, consisting of perforated metal, urethane and metal mesh, anti-dust performance is greatly improved and filter life is dramatically lengthened over that of single layer electrostatic filters. The filter in the LV-7290 can last up to 5,500 hours in ECO Mode, greatly reducing maintenance time.

Easy Access Lamp
For a quick and easy replacement, the LV-7290's lamp is located on the top of the projector. There is no need to move the projector, even if it is ceiling mounted.
To further aid in maintenance, a replacement counter indicates when the lamp and filter require changing.
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