If you have a Valuxhome electric fireplace insert and want to give it a finished, built-in look, this trim kit is exactly what you need. The frame measures 39.44 inches long by 29.52 inches high, designed specifically to fit over Valuxhome's 30-inch wide fireplace inserts. What's really great is how it transforms the look of your fireplace from a basic insert to a custom built-in appearance without any complicated installation. The kit fits over your existing insert with no holes needed in your wall, which is perfect for renters or anyone who doesn't want permanent modifications. I installed mine in about 20 minutes, and it made such a difference in the overall look of my living room. The maximum hole size in your wall should be 39.44x29.52 inches to accommodate both the insert and this trim frame. The quality is solid - it feels sturdy and well-made, not flimsy like some trim kits. The finish is clean and modern, working with various decor styles from contemporary to traditional. If you've been looking for an easy way to upgrade your electric fireplace from looking like an appliance to looking like a custom installation, this trim kit delivers fantastic results. It's one of those simple additions that makes a huge difference in your room's appearance and really completes the fireplace installation.