16" (406 mm) Dual Joist Ceiling MountThe dual joist ceiling adapter provides the ultimate in placement flexibility.Features- Low-profile, aesthetic design- Integrated cable management allows cables to exit the top of the plate through the cable exit port- Built-in lateral shift provides placement flexibility- All-Points Security System exclusive locking hardware at column connection point protects against theft- Aluminum construction for optimal strength in a lightweight design- 1.5” NPT CompatibleCertifications: TUV ApprovedOverall Dimensions (H x W x D): 1.9" x 3.2" x 17.6" (48 x 81 x 447 mm)Weight Capacity: 500 lbs (226.8 kg)