Trend AIR/MF/P3 APF40 with P3 R D Filter Pair for AirMask Pro Pair of P3 filters for the AirMask Pro full face mask for use with construction dust. The Trend AIRMASK PRO is an industrial rated, low profile and lightweight full face respiratory mask with ultra-low breathing resistance. Maximum BreathabilityMaximum VisionMaximum Comfort TREND AIR/MF/A2P3 A2 P3 FILTER SPECIFICATION Rating: DIY/Craftsman/Professional Weight: 287 g Assigned Protection Factor: APF40 with P3 R D