| Exhibit                  (10.ae) |
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**FIFTH      AMENDMENT TO THE **

**MET-PRO      CORPORATION SALARIED PENSION PLAN**

| This                  Fifth Amendment to the Met-Pro Corporation Salaried Pension Plan                  (the                  “Plan”) is made by Met-Pro Corporation (the “Company”).**WITNESSETH****WHEREAS**,                  the Company adopted the Met-Pro Corporation Salaried Pension Plan                  and                  attendant Trust Agreement (the “Plan”) effective September 1, 1968 as                  amended and restated effective September 1, 2000;**WHEREAS**,                  pursuant to the terms of the Plan, the Company may amend the Plan                  at any                  time; and**WHEREAS**,                  the Company wishes to amend the Plan to freeze benefit accruals                  effective                  as of December 31, 2006 (the “Freeze Date”).**NOW,                  THEREFORE, BE IT RESOLVED**,                  that all participant benefit accruals under the Plan are hereby                  frozen                  effective as of the Freeze Date;**RESOLVED,                  FURTHER**,** **that                  all benefit accruals will cease under the Plan as of the Freeze                  Date;**RESOLVED,                  FURTHER**,                  that no further service credit shall be granted under the Plan                  for any                  purpose except that service will continue to be counted for purposes                  of                  vesting of benefits that have accrued as of the Freeze Date and                  for                  determining eligibility for early retirement as to benefits accrued                  as of                  the Freeze Date, and no future compensation shall be taken into                  account                  for purposes of calculating a participant’s accrued benefit;**RESOLVED,                  FURTHER**,                  that on and after the Freeze Date, the determination of the amount                  of a                  participant’s accrued benefit shall be based on the provisions of the Plan                  in effect as of the Freeze Date, but calculated as if the participant                  had                  terminated employment as of the Freeze Date;**RESOLVED,                  FURTHER**,                  that the Plan is hereby amended as appropriate to reflect the foregoing                  resolutions by adding a new Article XIX to the end of the Plan                  as                  follows:**ARTICLE                  XIX****FREEZING                  OF PLAN**19.1                          The                  Plan has been frozen as of December 31, 2006 (the “Freeze Date”). There                  shall be no future benefit accruals on and after the Freeze Date.                  A                  Participant’s Credited Service, Compensation, and Average Monthly Earnings                  shall be determined as of the Freeze Date. A Participant’s accrued benefit                  shall based on the provisions of the Plan in effect on the Freeze                  Date,                  but calculated as if the Participant had terminated employment                  as of the                  Freeze Date.19.2                          Notwithstanding                  the above, Years of Service shall continue to be counted under                  the Plan on                  and after the Freeze Date solely for purposes of vesting in a benefit                  accrued as of the Freeze Date and for determining eligibility for                  early                  retirement as to benefits accrued as of the Freeze Date, but not                  for any                  other purpose under the Plan.19.3                          All                  benefits, rights and features shall be preserved as required under                  Code                  Section 411(d)(6) and regulations issued                  thereunder. |
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| **RESOLVED,                FURTHER**,                that the Company is authorized and directed to make any amendments                to the                Plan as may be required by the Internal Revenue Service or otherwise                to                maintain its tax-qualified status, the signature of an officer of                the                Company appearing on any such amendment being conclusive evidence                of the                approval thereof by the Board of Directors; and**RESOLVED,                FURTHER**,                that all previous actions taken by the proper officers or employees                and                counsel of the Company to implement the foregoing are hereby ratified                and                confirmed as if such action were approved at a duly convened meeting                of                the Directors.**IN                ALL OTHER RESPECTS**,                this Plan is continued in full force and effect. In order to maintain                the                terms of the Plan in a single document, this Amendment may be incorporated                into the most recent restatement of the Plan.**IN                WITNESS WHEREOF**,                the Company has caused this Fifth Amendment to be executed by its                duly                authorized officer this 18th day of October,                2006. |
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|        |                            |                                   |   |                                |   |      |
|-------------|---------------------------------|----------------------------------------|--------|-------------------------------------|--------|-----------|
| **ATTEST:** |                            | **Met-Pro                Corporation** |
|        |                            |                                   |   |                                |   |      |
| By          | /s/              Gary J. Morgan |                                   | By     | /s/              Raymond J. De Hont |
|        |                            |                                   |   |                                |   |      |
| Title:      |                            | Vice                President-Finance  |   | Title:                              |   | President |

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