Plastic Corners

Testrite Aluminum’s Plastic Corners are designed for use with round aluminum tubing, round steel tubing, square aluminum tubing, and square steel tubing. These are high-quality corner connectors, ideal for assembling frames, fixtures, and other light weight modular displays for indoor use. Featuring 90-degree plastic L corners, plastic T corners, and 3-way plastic corner connectors, these parts fit snugly with our 1" and 1-1/4" tubing, ensuring secure, professional-grade assembly. Designed for ease of use, many include spring button mechanisms for tool-free setup and durability in retail, trade shows, and custom projects. Designed for lightweight display structures, these connectors deliver versatility and simplicity. Learn more about each corner by clicking through for more information, and always test the corner first to make sure it safely meets the needs of your application.