Added a comment for custom cut length and on 3/4 edges they nailed it. One was slightly crooked but it was crooked long so I was easily able to cut it back. Having to cut one end is better than having to cut all 4 so that’s nice. The product itself is great. I got a channel mounting clips end covers and a diffuser. Only complaint is the end covers are a slightly different color due to being plastic while channel is aluminum. Drilling holes to access the mounting screws for perfect install and then covering the holes with the led strip was my preferred way to install. My favorite thing is the variety of channels available from W4S. Going to be using them again for a major project coming up.