6
Common metals and their alloys; metal building materials; transportable buildings of metal; materials of metal for railway tracks; non-electric cables and wires of common metal; ironmongery, small items of metal hardware; pipes and tubes of metal; safes; goods of common metal not included in other classes; ores.
metal building materials for use in rooftop equipment support systems, metal building materials for use in hvac-r support systems; frameworks of metal for use in rooftop equipment support systems, frameworks of metal for use in hvac-r support systems; modular frameworks of metal for use in rooftop equipment support systems, modular frameworks of metal for use in hvac-r support systems
19
Building materials (non-metallic); non-metallic rigid pipes for building; asphalt, pitch and bitumen; non-metallic transportable buildings; monuments, not of metal.
non-metallic frameworks for use in rooftop equipment support systems, non-metallic frameworks for use in hvac-r support systems; non-metallic modular frameworks for use in rooftop equipment support systems, non-metallic modular frameworks for use in hvac-r support systems; non-metallic modular systems consisting of frameworks and supports, bases, anti-vibration mounts, mounts, brackets, joints and connectors for rooftop equipment support systems, non-metallic modular systems consisting of frameworks and supports, bases, anti-vibration mounts, mounts, brackets, joints and connectors for use in the support of hvac-r systems, apparatus and equipment; non-metallic components for modular systems consisting of frameworks and supports, bases, anti-vibration mounts, mounts, brackets, joints and connectors for use in rooftop equipment support systems, non-metallic components for modular systems consisting of frameworks and supports, bases, anti-vibration mounts, mounts, brackets, joints and connectors for use in the support of hvac-r systems