This respirator is approved by NIOSH/MSHA for the new 42 CFR 84 regulations that will change respirator filtration in 1998. This respirator is designed to do the same as 7800 full face but does not have the capability of all of the options of the 7800. This respirator can be attached to the SA1000 - SA2000 supplied air hose kit for Supplied Air Needs. We Highly recommend Oil-Less Compressors when connecting to outside air sources!! Limited replacement parts and sizes are available.