24" Base Board Return Register, Complimentary Design. ( Bright White)

Code: RB47224G
Price: $89.77
Quantity in Basket: None
24" Base Board Return Register All-Steel Construction Two-foot in length. Complimentary return air Design.(Bright White) *************************************************************************************************************************************** * Frequently Asked Questions * What is "Free Area"? 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. ***************************************************************************************************************************************