Exceptionally smooth and quiet movement, the SL236 is a good in-ceiling LCD projector mount choice for finished ceilings in homes and corporate offices. Fits most installation requirements, needing only 11" of clearance above the ceiling Easily accommodates multiple control options Rated for other air handling spaces; not UL Listed. **To confirm the compatibility of this mount with your projector, visit Chief's MountFinder PRO. the MountFinder PRO will determine which SLB Interface Bracket you will need to order for your specific projector to fit INTO the SMART-LIFT. Select "Interface Bracket" from the list of Mount Types.