What's the purpose of these Plates?
Their purpose is to prevent signs from being bent or distorted if you over tighten the mounting bolts when installing signs onto u-channel or square posts. These aluminum plates are not typically a requirement, but we recommend their use.
Installation Process when Mounting Signs
If you are mounting signs to a U-Channel Post, the following
hardware accessories are required:
- 1 U-channel post, sizes range from 4ft to 12ft,
either Green or Galvanized finishes.
- 1 Bolting Set (Part# Y3465 or Y4899)
Set includes washers and bolts, or
- 1 Tamperproof Set (Part# Y4900 or Y4901)
Set includes washers, one way bolts and break away nuts.
- 1 Pair of Ribbed Plates (optional) Part# Y4915
- Install as shown on the illustration.