Used this for a Sammy un65f9000
Peerless PLA60-UNLP
[Link: peerless-av.com]Did not try full 90, but spec shows 30.75 length
It's a beast, weighs more than TV.
TV will canter/tilt sideways when pulled out, they said its part of the design?
Do not trust verticle center measurment from instruction manual, assemble and place on back of TV, take your own measurement. It's 1.5/1.75 different than stated! YMMV.
Allow around 6" of depth for mount.