This is a Wayne Dalton Torquemaster residential garage door spring tube bracket (part# 142026) which connects the horizontal spring shaft to the door header for center support.
*****If you remove your Torquemaster Idrive operator, and replace it with a trolley/rail style operator, on a double car garage door, you will need to install this spring tube bracket to support the center of the torquemaster door spring tube, so that it will not sag & "whip" when the door is travelling.*****

Dimensions are approximate; Bracket in the vertical installed position is, 3-1/4" Tall x 2-3/4" Deep x 1" Flange, with 2 elongated holes 5/16" Wide x 7/16" Tall x 2-1/8" on center.
Constructed of 14 Gauge galvanized steel,
Black, nylon, Cam shaped bushing ID is 1-1/4" with 1-1/2" at high point.