Universal U Channel Rubber Seal Strip 1/32" Opening Edge Trim All Weather Protector Strip (10ft) - Walmart.com
Rubber U Channel Edge Trim, Door Edge Guard Seal Strip, Rubber Edge Trim, Fits Edge up to 0.08 Inch (2mm) U Shape Weather Stripping (10 Feet, Black) - - Amazon.com
Silicone Rubber U-Channel | Reliance Rubber Industries Inc.