.75 x .75 Narrow Finger, High Density Panel Channel- Cover Included Narrower finger width is 6mm Slot width is 4 mm. Made from high-impact, self extinguishing, warp-proof PVC. Optional adhesive backing is available. Maximum service temperature: 85 degrees C (185 degrees F) Tested to UL File up to 50 degrees C (122 degrees F). 94V-0 rated. 5mm slot width is available in both white and grey for 1020, 2020, 2030, 2040.