A 2 metre length of black P4 profile from Tech Light this product is 7mm in depth 11mm in external width and 9.4mm in internal width. This product has a wide variety of applications from commercial window displays to domestic cabinet lighting. The profile itself acts provides a heat sink which assists in dispersing heat from the LED strip. This helps prevent overheating thus keeping your strip brighter for longer. All Tech Light LED profiles are protected by anodization layer which protects them from the elements.