3M Versaflo Replacement Hood with Inner Shroud, White, Standard Size, Clear. S-607-10, for Premium Head Suspension. With a S-950 Premium Head Suspension installed inside, the S-607 hood is approved for use with certain 3M Powered Air Purifying and Supplied Air Respirator Systems The S-607 is the replacement hood for the S-657 Hood Assembly. UOM: 10/CS.