the first one 6” from the bottom and the last one 6” from the top

Because chain link fence posts are hollow

LA412DCS Installation Manual

Trim plate with integrated postal lock cover exclusively for installing with Model CAPXS – Smart Video Intercom S

This insert is NOT meant to be used as supports for other posts

3' Tall x 8' Wide Double Drive Swing Vinyl Gate For Vinyl Fences (AFC-11) Color:White the first one 6” from2 Gates Make Up The Double Swing Open up your backyard with an American Vinyl Works 3' tall x 8' wide Double Drive Swing Vinyl Gate. This gate is impervious to rot and insects and is strong enough and durable enough to last in most climates and weather conditions. 3' tall and 8' wide Minimal upkeep Long service life Gate hardware not included Flexible