2-In-1 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. | PITCH: -15 to +15 degrees, Roll: -8 to +8 degrees, Maximum distance between mounting holes: 17.5 in/ 44.5 cm. | MAX WEIGHT: Our products can only bear the maximum support weight: 44 lbs / 20 kg, if used in large projectors, the stand may bend. Note: This mount does NOT support vaulted ceilings and walls. | EXTENDABLE : Mounting arms removable and extendable. With extension pole, height adjust from 10.62'' to 21.26'' (27 - 54 cm). | UNIVERSAL MOUNTING:The hanger 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.