Met Pro (MPR) 8-K Completion of Acquisition or Disposition of Assets

	Exhibit (10)(co)
	Suite 300 3025 Chemical Road Plymouth Meeting, PA 19462

February 10, 2012

Mr. Gary J. Morgan

Senior Vice President - Finance & CFO

Met-Pro Corporation

160 Cassell Road

Harleysville, Pa. 19438

Re: Demand Line of Credit

Dear Gary,

Please be advised that we have reaffirmed your Discretionary Demand Line of Credit in the amount of $4,000,000 from February 28, 2012 through November 30, 2012. Borrowings under the Line will be on mutually agreeable terms and conditions, and will be subject to review from time to time. Borrowings are evidenced by the Demand Promissory Note dated February 23, 1996 and advances will be available at our discretion.

Sincerely,

/s/Dale R. Carr

Dale R. Carr

Senior Vice President

Agreed and Accepted this     17th       day of   February    2012.

/s/Raymond J. De Hont	/s/Gary J. Morgan
Raymond J. De Hont	Gary J. Morgan
Chairman and CEO	Senior Vice President -Finance & CFO