Particulate respirators are the simplest, least expensive, and least protective of the respirator types available. These respirators only protect against particles. They do not protect against chemicals, gases, or vapors, and are intended only for low hazard levels.
A factory tow package usually includes heavy duty rear shocks/springs and an auxiliary transmission cooler in addition to the tow hardware itself, and sometimes they include a full size spare tire too. When a dealer installs it they just put on the hitch and wiring plug.
Unbraked towing capacity refers to the capacity of a vehicle that is towing a trailer without its own individual braking system. Unbraked towing capacity is usually less than braked towing capacity. For a vehicle to tow another vehicle or trailer, a tow bar, recovery point or tow hitch is needed.