Filaments are synthetic bristles made of nylon or polyester usually pointed or tipped to produce a better finish

Filler is a material used to level a small hole or void in a surface

Film build is theability of a paint to achieve thickness during application without sagging or dripping

Fine threads on a screw havehigher threads per inch for slower driving of screws and more grip in materials like sheet metal

The finish coat is the final paint layer formulated to provide the desired surface color, sheen, texture, level of durability, and protection

A finish hammer is a medium-sized hammer with a flat face for detail fasteners

A finish nailer is a tool for driving 15 gauge angle collated nails

Fire blocking is blocking placed between two studs with the purpose of sealing the stud bay and preventing vertical airflow within the wall cavity

A fire exit is a specially designated exit for fast evacuation required for any public or commercial building. It must be well marked and never blocked or obstructed.

A fire extinguisher is a special device required for fire control in an emergency. Designed to aid in creating a path for evacuation, not to fight a fire.