Fit System 3891 Deluxe Universal Clipon Trailer Towing Mirror

Fit all mirror up to 11 1/2" tall, Secure Mounting Hardware, The mirror head is 5” x 8” with a viewing area of approximately 5 1/8” x 7 ¾”. The mounting bracket area is approximately 4 ½” x 11 ½”, Adds the extra vision to tow wide loads without interfering with your existing mirror.