The B-Line B278ZN Post Base anchors a vertical post to a 1-5/8 inch channel, forming a secure, channel-based mounting point for framing, railings, or supports. This model features a 5 inch by 5 inch base plate and is sold as a 3-pack. Designed specifically for use with 1-5/8 inch channel systems, the B278ZN ensures consistent fit and alignment across multiple posts.
