We provide customers with friction stay suitable for various windows, and provide multiple sizes from the groove width, length and thickness of the product to meet the needs of each customer. We use national standard stainless steel materials to ensure product quality. Each Bar has reached the standard thickness to increase the load-bearing capacity. 8-24 inches in length, suitable for windows of various sizes. We can provide material testing reports and factory ISO9001 certificates, so that customers can use our products with peace of mind