My sensei used to say, "If small holes aren't fixed, then big holes will bring hardship." Adding a ColorDMD to a Stern machine with an angled speaker panel makes a large hole around the display that can bring hardship in the form of dust, dirt, and light bleed.
This is a fire-resistant foam blend gasket that seals the large gap created when you install a ColorDMD LCD in a Pro/Premium/LE Stern machine with angled speaker panels like these:
Stern Star Trek
Metallica LED (re-run with angled metal speaker panel)
Iron Man Pro Vault
Game of Thrones
Installation takes about 5-10 minutes and substantially reduces light leakage and dust intrusion on the inside of the display, and a life with less hardship is a life worth living.