The Gepe 35mm Double Frame glassless 24X36 forLKM 100pc is a 2mm-thich plain plastic mount with fix-points. It can accommodate 35mm film formats, and they are designed to fit in all standard and DIN slide trays. It can even hold 80/10/120 round trays as well as LKM and Paximat trays. The fix-points allow for easy insertion and positioning of the slide to prevent it from slipping out while closing the mount. It is made of high-grade plastic with a temperature resistance of 212°F that allows for longer operation without damaging the slide or the mount.