Twenty (20) Respiratory Equipment Masks for Law Enforcement Team Avon Respiratory FM54 Masks that meet or exceed the following requirements: Masks must provide protection against traditional chemical and biological warfare agents and select toxic industrial materials (TIMs), with a CBRN chemical agent resistance of >36 hours. Masks must offer both positive pressure SCBA, PAPR and negative pressure APR/capability without the need to change components, with a lever that enables switching between modes with ease. Masks must be available in right, left or twin port filter configurations. The field of view must include a panoramic single lens visor, an optically correct visor, and be scratch resistant. Masks must have a next generation voice projection unit / amplifier with internal waterproof microphone assembly, as well as 3‐pin electronic communications port for radio interference and electronic pass‐through for external radio use. Masks must have 4 face piece sizes to accommodate operators. CBRNCF50 NIOSH filters must be included. Masks must have an electronic communications port for integrated voice projection and radio communication. Communications Cable Kit must be provided. Masks must weigh less than two (2) pounds, excluding filter.