Optoma HD803 User Manual - Page 46

Appendices Ceiling Mount Installation 1. To prevent damaging your projector, please use the ceiling mount package for installation. 2. If you wish to use a third party ceiling mount kit, please ensure the screws used to attached a mount to the projector met the following specifications: Noottee Please note that damage resulting from incorrect installation will invalidate the warranty.  Screw type: M4  Maximum screw length: 10mm  Minimum screw length: 8mm 410.99mm (16.18") 106.00mm (4.17") 185.00mm (7.28") 310.62mm (12.23") Warning: 1. If you buy the ceiling mount from other company, please ensure that there is at least 10cm distance between the bottom cover of the projector and the ceiling. 2. Avoid placing the projector near sources of heat such air-conditioning units and heaters otherwise it may overheat and shut down automatically. 3. Ceiling mounting shall be mounting on metal or concrete. 82.50mm (3.25") 100.00mm (3.94") 200.00mm (7.87") (33.49") Min. 610.60mm/ Max. 850.60mm (24.04") 46 82.50mm (3.25")