Overview The OASITek Underdeck Wall Channel Outside Corner Box is designed to connect two wall channel runs when transitioning around an exterior 90° corner. It allows the back wall channel to continue cleanly around outside corners while maintaining proper alignment and drainage performance. Used where the underdeck ceiling wraps around an exterior wall, structural projection, or bump-out, this component provides a finished, watertight transition point for wall channel connections. Sold individually. Why You'll Love It - Connects wall channels around exterior 90° corners - Maintains proper alignment and uninterrupted water flow - Creates a clean, finished outside corner detail - Designed specifically for OASITek underdeck systems - Preserves the professional appearance of perimeter transitions What's Included - One (1) Underdeck Wall Channel Outside Corner Box Helpful Notes - Outside corner boxes are required when wall channels transition around an exterior 90° corner. - Inside corner boxes are used where wall channels meet at interior 90° corners. - Straight joints are used to connect two wall channel sections in a straight, continuous run. 👉 View Inside Corner Box👉 View Straight Joint
