CleanSpace half mask adaptor for Quantitative fit is designed to be used with the CleanSpace half masks; the mask fit test adaptor is fitted in the front of the half mask to enable a Quantitative fit test; instructions for use are provided with the adaptor; note: the CleanSpace full face mask (PAF-1014) requires the CleanSpace full face mask Quantitative fit test (PortaCount) adaptor (PAF-1015); compatible with the CleanSpace half masks (PAF-0033, PAF-1010, PAF-0027); used with the CleanSpace half masks only; quick and easy to install; product weight 70 g; product dimensions 50 x 50 x 25 mm