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                                                                Exhibit 10.b(iv)

                                     [Date]

[Name]

[Address1]
[Address2]
[Address3]
[Address4]

Dear [Salutation]:

     On behalf of the Company, I am pleased to inform you that on [date], the
Board of Directors granted you a non-qualified stock option pursuant to the
Company's 2005 Long Term Stock Incentive Plan (the "Plan"), subject to the
conditions set forth below and in the Appendix attached hereto. This letter and
the attached Appendix (the "Agreement") state the terms of the option and
contain other provisions which on your acceptance commit the Company and you, so
I urge you to read them carefully. You should also read the Plan and Prospectus
dated [date] covering the shares which are the subject of this option. Enclosed
are copies of these documents as well as our latest annual report to
stockholders and proxy statement to the extent our records indicate you may not
have previously received them. Copies are also available upon request to the
Company. We suggest that you review each of these documents. The federal income
tax attributes of non-qualified stock options are discussed in the Prospectus.
This option does not qualify for the federal tax benefits of an "incentive stock
option" under the Internal Revenue Code.

     This option, if accepted by you, grants you the right to purchase [no. of
shares] shares of Company Common Stock, $1.00 par value, at a price of [$_____]
per share, which the Board has determined is the fair market value of a share of
the Company Common Stock on the date of grant.

WHEN THE OPTION IS EXERCISABLE AND TERMINATION

     This option is exercisable cumulatively in installments of 20% commencing
as of [date], 20% as of [date], 20% as of [date], 20% as of [date] and 20% as of
[date]; provided that, subject to the last sentence of this paragraph, on each
date of exercise you are an Eligible Director, as hereinafter defined. An
Eligible Director is any Director of the Company who is not an employee of the
Company and who receives a fee for services as a Director. All installments of
the option as above described must be exercised no later than [expiration date];
all unexercised installments or portions thereof shall lapse and the right to
purchase shares pursuant to this option shall be of no further effect after such
date. If during the option exercise periods your term as an Eligible Director is
terminated for any reason, this option shall terminate in accordance with the
following paragraph and Section 6 of the Plan.
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                                     Page 2


                                                                          [Date]

     Notwithstanding the foregoing or anything in the Plan:

     (i) If your service as a Director is terminated by reason of permanent and
total disability, any portion of the option that is not then exercisable shall
become fully exercisable and shall remain exercisable in accordance with its
terms and the provision of the Plan until the earlier of the expiration of the
original option term or one year after death.

     (ii) If you retire on or after normal retirement age as specified in the
Company's Corporate Governance Guidelines, the option shall continue to become
exercisable and shall remain exercisable in accordance with its terms and the
provisions of the Plan.

     (iii) If your service as a Director terminates for any reason other than as
a result of death, permanent and total disability or retirement due to age, any
portion of the option that is then exercisable will remain exercisable until the
earlier of the expiration of the original option term or one year after death.

     As provided in the Plan, if at any time you engage in an activity following
your termination of service which in the sole judgment of the Board of Directors
is detrimental to the interests of the Company, a subsidiary or an affiliated
company, all unexercised installments or portions of the option will be
forfeited to the Company. You acknowledge that such activity includes, but is
not limited to, "Business Activities" (as defined in the Appendix) for purposes
of this option and for purposes of all other outstanding awards of restricted
stock and options that are subject to comparable forfeiture provisions.

ACCEPTANCE

     We agree that all of the terms and conditions of this option are reflected
in this Agreement and the Plan, and that there are no other commitments or
understandings currently outstanding with respect to any other awards of stock
options or restricted stock except as may be evidenced by agreements duly
executed by you and the Company.

     By accepting this option you: (a) represent that you are familiar with the
provisions of the Plan and agree to its incorporation in this Agreement; (b)
agree to provide promptly such information with respect to shares acquired
pursuant to this option as may be requested by the Company and to comply with
any requirements of applicable federal and other laws with respect to
withholding or providing for the payment of required taxes; and (c) acknowledge
that all of your rights to this option are embodied herein and in the Plan.

     Section 3 of the Plan provides that the Organization and Compensation
Committee shall have the authority to make all determinations which may arise in
connection with the Plan. It further provides that the Organization and
Compensation Committee's interpretation of the terms and provisions of the Plan
shall be final and conclusive.

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                                     Page 3


                                                                          [Date]

     Please complete your mailing address and Social Security number as
indicated below and sign, date and return the copy of this Agreement to Eugene
A. Gargaro, Jr., our Vice President and Secretary, as soon as possible in order
that this option grant may become effective.

                                        Very truly yours,

                                        MASCO CORPORATION


                                        ------------------------------
                                        Richard A. Manoogian
                                        Chairman of the Board
                                        and Chief Executive Officer

I accept and agree to all the foregoing terms and conditions.


                                        ------------------------------
                                        (Signature of Recipient)

                                        ------------------------------

                                        ------------------------------
                                        (Mailing Address)

                                        ------------------------------
                                        (Social Security Number)

                                        Dated:
                                               -----------------------

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                                                                          [Date]

                          APPENDIX TO OPTION AGREEMENT

     Masco Corporation (the "Company") and you agree that all of the terms and
conditions of the grant of the option (the "Option") contained in the foregoing
letter agreement into which this Appendix is incorporated (the "Agreement") are
reflected in the Agreement and in the 2005 Long Term Stock Incentive Plan (the
"Plan"), and that there are no other commitments or understandings currently
outstanding with respect to any other awards except as may be evidenced by
agreements duly executed by you and the Company.

     By signing the Agreement you acknowledge acceptance of the Option and
receipt of the documents referred to in the Agreement and represent that you
have read the Plan, are familiar with its provisions, and agree to its
incorporation in the Agreement and all of the other terms and conditions of the
Agreement. Such acceptance, moreover, evidences your agreement promptly to
provide such information with respect to shares acquired pursuant to the Option,
as may be requested by the Company.

     In addition you agree, in consideration for the grant of the Option and
regardless of whether the Option becomes exercisable or is exercised, while you
are a Director of the Company and for a period of one year following the
termination of your term as a Director of the Company, other than a termination
following a Change in Control, not to engage in, and not to become associated in
a "Prohibited Capacity" (as hereinafter defined) with any other entity engaged
in, any "Business Activities" (as hereinafter defined) and not to encourage or
assist others in encouraging any employee of the Company or any of its
subsidiaries to terminate employment or to become engaged in any such Prohibited
Capacity with an entity engaged in any Business Activities. "Business
Activities" shall mean the design, development, manufacture, sale, marketing or
servicing of any product or providing of services competitive with the products
or services of the Company or any subsidiary at any time the Option is
outstanding, to the extent such competitive products or services are distributed
or provided either (1) in the same geographic area as are such products or
services of the Company or any of its subsidiaries, or (2) to any of the same
customers as such products or services of the Company or any of its subsidiaries
are distributed or provided. "Prohibited Capacity" shall mean being associated
with an entity as a director, employee, consultant, investor or another capacity
where (1) confidential business information of the Company or any of its
subsidiaries could be used in fulfilling any of your duties or responsibilities
with such other entity, or (2) an investment by you in such other entity
represents more than 1% of such other entity's capital stock, partnership or
other ownership interests.

     Should you either breach or challenge in judicial or arbitration
proceedings the validity of any of the restrictions contained in the preceding
paragraph, by accepting the Option you agree, independent of any equitable or
legal remedies that the Company may have and without limiting the Company's
right to any other equitable or legal remedies, to pay to the Company in cash
immediately upon the demand of the Company (1) the amount of income realized for
income tax purposes from the exercise of any portion of the Option, net of all
federal, state and other taxes payable on the amount of such income, but only to
the extent such exercises occurred on or after the termination of your term as a
Director of the Company or within the two year period prior to the date of such
termination, plus (2) all costs and expenses of the Company in any effort to
enforce its rights under this or the preceding paragraph. The Company shall have
the right to set off or withhold any amount owed to you by the Company or any of
its subsidiaries or affiliates for any amount owed to the Company by you
hereunder.

     By accepting the Option you: (a) agree to comply with the requirements of
applicable federal and other laws with respect to withholding or providing for
the payment of required taxes; and (b) acknowledge that all of your rights to
the Option are embodied in the Agreement and in the Plan.

     Section 3 of the Plan provides, in part, that the Committee appointed by
the Company's Board of Directors to administer the Plan shall have the authority
to interpret the Plan and award agreements, and decide all questions and settle
all controversies and disputes relating thereto. It further provides that the

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                                     Page 5


                                                                          [Date]

determinations, interpretations and decisions of the Committee are within its
sole discretion and are final, conclusive and binding on all persons. In
addition, you and the Company agree that if for any reason a claim is asserted
against the Company or any of its subsidiaries or affiliated companies or any
officer, employee or agent of the foregoing which (1) is within the scope of the
Dispute Resolution Policy (the terms of which are incorporated herein); (2)
subverts the provisions of Section 3 of the Plan; or (3) involves any of the
provisions of the Agreement or the Plan or the provisions of any other option
agreements relating to Company Common Stock or restricted stock awards or other
awards or the claims of yourself or any persons to the benefits thereof, in
order to provide a more speedy and economical resolution, the Dispute Resolution
Policy shall be the sole and exclusive remedy to resolve all disputes, claims or
controversies which are set forth above, and you shall be deemed to be an
employee within the scope of the Dispute Resolution Policy and you and the
Company shall be bound as if you were an employee for all claims within the
scope of the Dispute Resolution Policy, except as otherwise agreed in writing by
you and the Company. It is our mutual intention that any arbitration award
entered under the Dispute Resolution Policy will be final and binding and that a
judgment on the award may be entered in any court of competent jurisdiction.
Notwithstanding the provisions of the Dispute Resolution Policy, however, the
parties specifically agree that any mediation or arbitration required by this
paragraph shall take place at the offices of the American Arbitration
Association located in the metropolitan Detroit area or such other location in
the metropolitan Detroit area as the parties might agree. The provisions of this
paragraph: (a) shall survive the termination or expiration of this Agreement,
(b) shall be binding upon the Company's and your respective successors, heirs,
personal representatives, designated beneficiaries and any other person
asserting a claim based upon the Agreement, (c) shall supersede the provisions
of any prior agreement between you and the Company with respect to any of the
Company's option or restricted stock incentive plans or other awards to the
extent the provisions of such other agreement requires arbitration between you
and the Company, and (d) may not be modified without the consent of the Company.
Subject to the exception set forth above, you and the Company acknowledge that
neither of us nor any other person asserting a claim described above has the
right to resort to any federal, state or local court or administrative agency
concerning any such claim and the decision of the arbitrator shall be a complete
defense to any action or proceeding instituted in any tribunal or agency with
respect to any dispute.

     The Agreement shall be governed by and interpreted in accordance with
Michigan law.