Soundproofing materials for buildings

Noise suppressors for guns

Ventilation systems; ventilation systems for use as an integrated or integral component of a free standing modular privacy booth, meeting pod or office furniture; ventilation systems sold as an integrated or integral component of a free standing modular privacy booth, meeting pod, sleep pod, lactation pod or office furniture; ventilation systems for use with phone booths or office furniture

Telephone booths of metal

aquarium filtration apparatus, water filtering units for aquariums, aquarium filter cartridges, water filters for aquariums