Free area is the total minimum
area of the openings in the supply outlet or return inlet (usually
in square inches) through which air can pass. Also known as
the "see-through area". (See also "effective
area").
What is "Effective
Area" ?
Effective area is the net area
(in square feet) of a grille utilized by the area stream in
passing through the face openings. It is used the the equation:
CFM= Face Velocity X Effective Area. This is the basis for most
engineering data.
Do you have Material Data
Safety Sheets (MSDS) for your products?
No, because Hart & Cooley products
meet the definition of an "article", they are not
subject to the OSHA Hazard Communication Standard. Therefore,
Material Safety Data Sheets are not required. Under Section
1910.1200 (b)(5) of the OSHA Hazard Communication Standard an
article is defined as any manufactured item:
(1) which is formed to a specific
shape or design during manufacture,
(2) which has end-use functions
dependent in whole or in part upon its shape or design during
end-use, and
(3) which does not release, or
otherwise result in exposure to, a hazardous chemical under
normal conditions of use.
