A specialty fitting, our 1 5/8" L shaped thru fitting for canopies is made of high grade galvanized steel with welded connections for stable and durable performance. Make the 90-degree connection, and use the eyebolts for a strong, secure fit. The fitting's inner diameter is 1 5/8", designed to suit your specific needs. Build a sturdy structure that withstands the elements and lasts for years.