The North RU6500 Series is a silicone full facepiece compatible with the North series of cartridges and filters. The facepiece is available with five strap harness or nylon headnet. Features: Cartridge and Center Port Connections The RU6500 includes two cartridge connections, one on each side, and a single 40mm DIN thread center port.  The threaded cartridge connections are compatible with all North N Series filters and cartridges. The center port is compatiblewith adapters for a face-mounted Powered Air Purifying Respirator (PAPR) and a continuous flow supplied air respirator with center breathing tube. 5-Point Strap Suspension The RU6500 Series with five point head strap features “easy glide� straps for quick and secure donning and removal. Mesh Headnet Suspension The RU6500 Series with 4-point headnet easilyaccommodates other personal protective apparel such as a hardhat or earmuffs.North Safety