This mount is equipped with a 12" - 18" adjustable extension column (disassembly not required), a 6" quick connect ceiling plate, and stainless steel hardware for installation. This mount meets VESA standards.   
SunBriteTV® Ceiling Mount for 42"-55" Outdoor TVs
This mount is equipped with a 12" - 18" adjustable extension column (disassembly not required), a 6" quick connect ceiling plate, and stainless steel hardware for installation. This mount meets VESA standards. This all-weather, rustproof ceiling mount is compatible with 42”, 46", 47”, and 55” SunBriteTV landscape models, including SB-4217HD, SB-4670HD, SB-4717HD, SB-4917HD, SB-5574UHD, SB-S-55-4K, SB-5518HD, and SB-5570HD. 
Package Contents
(1) Mount
 
(1) 6" x 6" Designer Ceiling Adapter Plate
 
(1) Adjustable Extension Column
 
(1) Stainless Steel Installation Hardware Package