Compatible with single-lumen endotracheal tubes with an internal diameter as small as 5mm, as well as double-lumen tubes 37Fr. or greater, the LF-GP is the most versatile scope of the PortaView-LF series. The scope's superb optics and integrated miniature light source result in bright, high-resolution images for observation. In addition, the LF-GP offers an expanded view-field size - 2.2x larger than our LF-2 scope.