657216 – Wolverine 3/4" Inside Corner Post – Castle Stone

The Wolverine 3/4" Inside Corner Post (Model 657216) is a premium exterior siding accessory designed to create a smooth, professional transition at inside corners where siding panels meet. Part of CertainTeed’s trusted Vinyl Carpentry® collection, this corner post is engineered for compatibility with a variety of siding profiles, offering secure fitment and a cohesive finished appearance across exterior installations.

Constructed from durable, weather‑resistant vinyl, this accessory stands up to extreme temperatures, moisture, and UV exposure while maintaining its structural integrity and visual appeal. The Castle Stone finish delivers a rich, contemporary color tone that complements modern siding palettes and maintains consistent color through long‑term exposure.

The 3/4" Inside Corner Post includes pre‑punched nail slots to streamline installation and ensure accurate, secure placement. Its design conceals raw siding edges and provides a clean vertical line that enhances curb appeal on residential or light‑commercial structures.