Quietflex EBITDA

Quietflex EBITDA. Means the earnings before interest, taxes, depreciation and amortization of Quietflex Manufacturing Company, L.P., a Texas limited partnership, determined in accordance with U.S. generally accepted accounting principles except that gains or losses from extraordinary, unusual or nonrecurring items may be excluded in the discretion of the Committee.

Quietflex EBITDA. Means the EBITDA of Quietflex Manufacturing Company, L.P., a Texas limited partnership. -2-