Document:

Exhibit 10(n)

                                 AMENDMENT NO. 1
                                     TO THE
                  MET-PRO CORPORATION PENSION RESTORATION PLAN

This  amendment  to  the  Met-Pro  Corporation  Pension  Restoration  Plan  (the
"Restoration Plan") is made and effective this 4th day of April, 2001.

WHEREAS,  the  Board of  Directors  has  adopted  the  Restoration  Plan and the
Restoration Plan was thereafter approved by the Board of Directors on August 17,
2000.

WHEREAS,  Section 6 of the Plan  authorizes  the Board of Directors to amend the
Restoration Plan.

WHEREAS,  the Board of Directors  desires to amend the  Restoration  Plan in the
following manner:

          1.   Section 1 of the Restoration Plan is hereby deleted.

          2.   A new Section 1 is hereby added to the Plan as follows:

               "1.  Purposes. The Restoration Plan shall provide for the payment
                    of supplementary benefits primarily to compensate William L.
                    Kacin,  Raymond J. De Hont and Gary J. Morgan (the "Eligible
                    Executives") for the amount of the reduction, if any, in any
                    such person's  respective benefits under the Pension Plan on
                    account of the application of Section  401(a)(17) or Section
                    415 of the Code.."

Except as expressly  provided herein, the Restoration Plan as amended remains in
force and effect, unamended and unmodified.

IN WITNESS  WHEREOF,  the Company has caused its  authorized  officer to execute
this Amendment on behalf of the Company.

WITNESS:                                          MET-PRO CORPORATION

                                                  By: /s/ William L. Kacin
------------------------------                       ---------------------------
                                                      William L. Kacin
                                                      Chief Executive OfficerExhibit 10(o)

           MET-PRO CORPORATION SUPPLEMENTAL EXECUTIVE RETIREMENT PLAN
                  (As Established Effective February 1, 2000)

     This  Met-Pro  Corporation  Supplemental  Executive  Retirement  Plan  (the
"Supplemental  Plan") is  established  effective  February  1,  2000 by  Met-Pro
Corporation (the "Company"), a Delaware corporation.

     1.  Purpose.  The  Supplemental  Plan  shall  provide  for the  payment  of
supplementary   retirement   benefits   to  William  L.  Kacin  (the   "Eligible
Executive").

     2.  Participation.  As used in the  Supplemental  Plan,  the term "Eligible
Executive" shall mean William L. Kacin.

     3. Plan Benefits.  The monthly benefit payable from this  Supplemental Plan
to the participant,  his surviving spouse, or other beneficiary will be equal to
the excess of (a) over (b),  multiplied by the Vested Percentage defined herein,
where:

     (a)  equals the monthly benefit that would be payable to Eligible Executive
          under the  Met-Pro  Corporation  Salaried  Pension  Plan  Amended  and
          Restated Effective September 1, 1989 (the "Pension Plan"), except that
          the amount under (a) shall be determined as follows:

          (i)  the amount  will be  determined  without  regard to the limits of
               Section 401(a)(17) or Section 415 of the Internal Revenue Code of
               1986, as amended (the "Code"),

          (ii) the "one  percent" in paragraph (d) of Section 5.2 of the Pension
               Plan  describing  the benefit  formula will be replaced with "two
               percent" subject to a maximum benefit

                                       -1-
<PAGE>
Exhibit 10(o)

           MET-PRO CORPORATION SUPPLEMENTAL EXECUTIVE RETIREMENT PLAN

               of fifty (50%) percent of Average  Monthly  Compensation  and the
               "two  percent" will be applied  without the Actuarial  Equivalent
               increase included in Section 5.3 of the Pension Plan,

         (iii) Average  Monthly  Compensation  shall be averaged  over the sixty
               (60) consecutive months which produce the highest monthly average
               compensation  within  the  last ten (10)  calendar  ___  years of
               employment,

          (iv) Average Monthly  Compensation  shall include the five (5) highest
               bonuses paid in last ten (10) year period of employment, and

          (v)  Eligible  Executive's  date of hire  November  17,  1975  will be
               reflected  in the  determination  of his  years  of  service  for
               benefit calculation purposes, and

     (b)  equals the sum of the following amounts for each month:

          (i)  The amount of benefit payable under the Pension Plan,

          (ii) The  amount of  benefit  payable  under the  Met-Pro  Corporation
               Pension Restoration Plan,

         (iii) The  amount  of  Director   benefit  payable  under  the  Met-Pro
               Corporation Directors' Retirement Plan,

          (iv) The amount of Chief  Executive  Officer benefit payable under the
               Met-Pro Corporation Directors' Retirement Plan,

                                      -2-
<PAGE>
Exhibit 10(o)

           MET-PRO CORPORATION SUPPLEMENTAL EXECUTIVE RETIREMENT PLAN

          (v)  The amount of Social Security retirement benefit payable, but not
               including  any  additional   benefit   payable  to  the  Eligible
               Executive's spouse during his lifetime,  and determined under the
               Social  Security  Act in  effect  at  the  date  of the  Eligible
               Executive's  retirement  (i.e.  not reflecting any cost of living
               increases subsequent to the Eligible Executive's retirement).

The Vested Percentage in Section 3 hereof shall be determined as follows:

       Continued Employment until:                       Vested Percentage
       ---------------------------                       -----------------
             January 31, 2001                                 25%
             January 31, 2002                                 50%
             January 31, 2003                                 75%
             January 31, 2004                                100%

          Notwithstanding  the above, the Vested Percentage shall be accelerated
          to 100% upon the  Disability (as defined in Section 4 hereof) or death
          of the Eligible  Executive during his status as an Employee of Met-Pro
          Corporation.  In  addition,  upon a Change of Control  (as  defined in
          Section 9 hereof) occurring during the Eligible  Executive's period of
          employment with Met-Pro  Corporation,  the Vested  Percentage shall be
          accelerated to 100%.

     Except  for  benefits  payable  as a result of a "Change  in  Control,"  as
defined in Section 9 hereof,  the benefit payable under this  Supplemental  Plan
will be payable to the same  individual as the benefit payable under the Pension
Plan,  will be payable  under the same form of pension  as the  benefit  payable
under  the  Pension  Plan,  will  be  determined  based  on the  same  actuarial
assumptions  used under the Pension Plan (other than the  actuarial  assumptions
used to compute  lump sum  payments)  and will  commence at the same date as the
benefit  payable  under the Pension  Plan. A schedule of benefits  payable under
this Supplemental  Plan will be delivered to each Eligible  Executive as soon as
practicable before benefits commence.

     Terms will be as defined in this Supplemental Plan, or otherwise as defined
in the Pension Plan.

                                      -3-
<PAGE>
Exhibit 10(o)

           MET-PRO CORPORATION SUPPLEMENTAL EXECUTIVE RETIREMENT PLAN

     4. Disability.  For purposes of the Supplemental  Plan  "Disability"  shall
mean the Eligible Executive's  inability to perform the usual duties required in
his position as Chief Executive Officer of Met-Pro  Corporation as determined by
a physician  selected by the Board of  Directors of the Company with the consent
of the Eligible Executive which consent will not be unreasonably withheld.

     5. Source of Benefits.  The benefits  payable under the  Supplemental  Plan
shall be paid exclusively from the Company's general assets. In this regard, the
Company  may create a grantor  trust  (within  the meaning of section 671 of the
Code) in connection with the Supplemental Plan to which it may from time to time
contribute  amounts to accumulate a reserve against its  obligations  hereunder.
Such  trust and any assets  held by such trust to assist the  Company in meeting
its obligations  under the  Supplemental  Plan shall conform to the terms of the
model trust as described in Internal  Revenue  Service  Procedure  92-64 (I.R.B.
1992-33).  Notwithstanding  the creation of such trust,  the benefits  hereunder
shall be a general  obligation  of the  Company.  Payment of benefits  from such
trust shall,  to that extent,  discharge  the Company's  obligations  under this
Supplemental Plan. The Eligible Executive shall have only a contractual right as
general creditor of the Company to the amounts,  if any,  payable  hereunder and
such right shall not be secured by any assets of the Company.

     6. Construction.  The Company intends the Supplemental Plan to be a benefit
plan which is maintained  by an employer  primarily for the purpose of providing
deferred  compensation  for a select group of management  or highly  compensated
employees,  within the  meaning  of Title I of the  Employee  Retirement  Income
Security Act of 1974, as amended ("ERISA"),  and any ambiguities in construction

                                      -4-
<PAGE>
Exhibit 10(o)

           MET-PRO CORPORATION SUPPLEMENTAL EXECUTIVE RETIREMENT PLAN

shall be  resolved  in favor  of  interpretations  which  will  effectuate  such
intention.  The  Supplemental  Plan  shall  be  governed  by  and  construed  in
accordance  with  the  laws of  Pennsylvania  to the  extent  such  laws are not
preempted by ERISA.

     7.  Administration of the Supplemental Plan. The Supplemental Plan shall be
administered  by the  Compensation  Committee  of the Board of  Directors of the
Company (the "Committee"), subject to the oversight of the Board of Directors of
the Company  (the  "Board").  The Board  shall have  authority  to make,  amend,
interpret  and  enforce  all   appropriate   rules  and   regulations   for  the
administration  of the  Supplemental  Plan and  decide  or  resolve  any and all
questions  including  interpretations  of the Supplemental  Plan as may arise in
connection with the Supplemental  Plan. The Board may employ agents and delegate
to them such  administrative  duties as it sees fit and may consult with counsel
who may be  counsel  to the  Company.  The  decision  or  action of the Board in
respect of any question arising out of or in connection with the administration,
interpretation  and  application  of the  Supplemental  Plan and the  rules  and
regulations  thereunder  shall be final  and  conclusive  and  binding  upon all
persons  having  any  interest  therein  subject  to the claim  and  arbitration
procedures contained in Section 11 hereof.

     8. Termination,  Suspension or Amendment.  The Board in its sole discretion
may terminate,  suspend or amend the Supplemental  Plan at any time or from time
to  time,  in whole or in part,  provided,  however,  that no such  termination,
suspension  or  amendment  shall  adversely  affect the  accrued  benefit of the
Eligible   Executive  of  the  Company,   their   surviving   spouses  or  other
beneficiaries  to the  extent of the  Vested  Percentage  or the  benefit of any
individual who is then vested and/or entitled to or receiving a benefit.

                                      -5-
<PAGE>
Exhibit 10(o)

           MET-PRO CORPORATION SUPPLEMENTAL EXECUTIVE RETIREMENT PLAN

     9.  Acceleration  of  Payments.  In the event a "Change of  Control" of the
Company (as  hereinafter  defined) shall be deemed to occur (whenever such shall
occur, and whether or not the Eligible Executive is then employed by the Company
or shall be alive),  all payments due to the Eligible  Executive,  his surviving
spouse or other  beneficiary  under this  Supplemental Plan shall be accelerated
and immediately paid in a lump sum payment in an amount determined in accordance
with the  provisions  of this  Supplemental  Plan.  At the  time of a Change  of
Control the Eligible Executives shall be deemed to be 100% vested.

     The  aggregate  amount of all such lump sum  payments  shall be paid by the
Company to the Eligible  Executive,  to the extent not paid from a grantor trust
(referred  to in  Section 5 hereof)  established  by the  Company.  The lump sum
payment to each  participant  and each other  individual  entitled  to a benefit
under this Supplemental Plan shall be equal to the lump sum present value of the
amount of the  participant's  or other  individual's  monthly  benefit under the
Supplemental  Plan,  determined  as of the date of the  Change  of  Control,  in
accordance with the  methodology set forth in the Pension Plan,  except that the
actuarial  factors  used to  calculate  the lump sum  present  value will be the
factors  used under the Pension Plan to calculate  actuarial  equivalence  or to
calculate the value of a lump sum, whichever results in a greater benefit.

     The Company,  and to the extent such benefit is funded under the trust, the
trustee shall issue to each participant and each other individual  entitled to a
benefit the amount of lump sum payment calculated on his behalf immediately upon
the Change of Control.

     In addition  to the lump sum payment  described  above,  the Company  shall
reimburse  Eligible  Executive,  surviving  spouses or other  beneficiaries  who
receives such a lump sum payment for any excise tax (and any excise tax due with
respect to such  reimbursement)  imposed on such lump sum payments in connection

                                      -6-
<PAGE>
Exhibit 10(o)

           MET-PRO CORPORATION SUPPLEMENTAL EXECUTIVE RETIREMENT PLAN

with a Change of Control of the Company pursuant to Section 4999 of the Internal
Revenue Code of 1986, as amended.

     For  purposes of this  Supplemental  Plan,  a "Change of Control"  shall be
deemed to occur:

     (a)  If any  "person"  or  "group  of  persons",  which  person or group of
          persons are not part of present  management  and are acting in concert
          (as the  term  "person"  is used in  Section  13(d)  and  14(d) of the
          Securities  Exchange Act of 1934, as amended (the "Act"))  becomes the
          "beneficial  owner" (as  defined in Rule 13d-3  promulgated  under the
          Act)  directly  or   indirectly  of  securities  of  the   Corporation
          representing thirty (30%) percent or more of the combined voting power
          of the Corporation's then outstanding securities; or

     (b)  If at any  time  there  shall be a change  in the  composition  of the
          Corporation's  Board of  Directors  resulting  in a  majority  of such
          Directors  as of  the  date  hereof  no  longer  constituting  such  a
          majority;  provided, however, that in making any such determination as
          to change in composition, there shall be excluded any change where the
          new  Director  was elected by or upon  recommendation  of such present
          majority;

     (c)  If  the  approval  by  the   stockholders  of  the  Corporation  of  a
          reorganization, merger or consolidation, in each case, with respect to
          which persons who were  stockholders  of the  Corporation  immediately
          prior  to  such  reorganization,   merger  or  consolidation  do  not,
          immediately  thereafter,  own more than  fifty  (50%)  percent  of the

                                      -7-
<PAGE>
Exhibit 10(o)

           MET-PRO CORPORATION SUPPLEMENTAL EXECUTIVE RETIREMENT PLAN

          combined  voting  power of the  reorganized,  merged  or  consolidated
          Corporation's then outstanding  securities  entitled to vote generally
          in the  election of  Directors  or with  respect to a  liquidation  or
          dissolution of the Corporation or the sale of all or substantially all
          of the Corporation's assets; or

     (d)  At any time that the  Corporation's  Board of  Directors,  in its sole
          discretion,   determines  that  a  Change  in  Control  has  occurred,
          regardless  of  whether  such  determination  relates  to  any  of the
          aforementioned events.

     10. General  Conditions.  No interest of any person and no benefit  payable
hereunder  shall be  assigned  as  security  for a loan  and any such  purported
assignment  shall be null,  void and of no effect.  No such  interest or benefit
shall  be  subject  in any  manner,  either  voluntarily  or  involuntarily,  to
anticipation, sale, transfer, assignment or encumbrance by or through any person
and any such purported action shall be null, void and of no effect.

     The Eligible Executive or any other person shall have no legal or equitable
right or  interest  in the  Supplemental  Plan  which is not  expressly  granted
hereunder.  Participation  hereunder  does not give the Eligible  Executive  any
right to be retained in the service of the Company or to continue in its employ,
and the right and power of the  Company  to dismiss or  discharge  the  Eligible
Executive is expressly reserved;  provided that no such termination,  dismissal,
discharge or severance  shall affect any right of the Eligible  Executive to the
benefits hereunder.

     11.  Claim and  Arbitration  Procedures.  Claims  for  benefits  under this
Supplemental  Plan will be  adjudicated  in accordance  with the benefit  claims
procedures  contained in the Pension  Plan. By accepting  participation  in this
Supplemental  Plan, each Eligible Executive agrees that any dispute not resolved

                                      -8-
<PAGE>
Exhibit 10(o)

           MET-PRO CORPORATION SUPPLEMENTAL EXECUTIVE RETIREMENT PLAN

under the  benefit  claim  procedures  will be  submitted  to final and  binding
arbitration with the American  Arbitration  Association in  Philadelphia,  PA in
accordance with the rules of the American Arbitration Association.  In the event
that an  Eligible  Employee  prevails  on any part of his  disputed  claim,  the
Company  will  reimburse  or  pay  all  of  the  Eligible  Employee's  costs  of
arbitration, including attorney's fees.

     12.  Effective  Date.  The  effective  date  of this  Supplemental  Plan is
 February 1, 2000.

Executed this 17th day of August 2000.

                                              By: /s/ Gary J. Morgan
                                                 -------------------------------
                                                 Gary J. Morgan
                                                 Vice President - Finance

Attest: /s/ Marian Berkey
       -----------------------
       Marian Berkey

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