1.[Unique Design] The hanging projector adopts a two ways to use design, can be installed as a Flush mount or Telescopic with height adjustment 16.9" - 25.6". Minimum distance from ceiling (w/o extension column): 4.7in/12cm. -15 to +15 degrees, Roll: -8 to +8 degrees, Maximum distance between mounting holes: 17.5 in/ 44.5 cm. 2.[Universal Mounting Max Weight]The projector hanging mount made of high grade steel ,can bear the maximum support weight is 44 lbs / 20 kg, keeping your expensive equipment . If used in large projectors, the stand may bend. Note: This ceiling tv mount does NOT support vaulted ceilings and walls. 3.[360° Adjustable & Extendable Design]Mounting arms removable and extendable. With extension pole, height adjust from 10.62'' to 21.26'' (27 - 54 cm). The projector wall mount is very suitable for living room projection, meeting room , classroom teaching etc. 4.[]The projector ceiling mount is easy to place and has three-hole and four-hole configuration. Almost all projectors can find a projector suitable for this mount. If the projector does not have the corresponding configuration, it does not apply to our products.