Middle-Market Growth Business. We will seek to acquire one or more growth businesses with an enterprise value ranging from $300 million to $1 billion. We believe that our focus on businesses in this segment of the middle market will offer us a substantial number of potential business targets that we believe can achieve and maintain significant revenue and earnings growth. We do not intend to acquire start-up companies and, under our amended and restated certificate of incorporation, we will not be permitted to effectuate our initial business combination with another blank check company or a similar company with nominal operations

Exhibit 4.1

JWC ACQUISITION CORP.

UNITS CONSISTING OF ONE SHARE OF COMMON STOCK AND ONE WARRANT TO PURCHASE ONE SHARE OF COMMON STOCK

THIS CERTIFIES THAT                                                                                                                                                                                                              is the owner of                                                                                                         Units.

Each Unit (“Unit”) consists of one (1) share of common stock, par value $0.0001 per share (“Common Stock”), of JWC Acquisition Corp., a Delaware corporation (the “Company”), and one warrant (the “Warrants”). Each Warrant entitles the holder to purchase one (1) share (subject to adjustment) of Common Stock for $11.50 per share (subject to adjustment). Each Warrant will become exercisable on the later of (i) thirty (30) days after the Company’s completion of a merger, capital stock exchange, asset acquisition, stock purchase, reorganization or other similar business combination with one or more businesses (each a “Business Combination”), or (ii) twelve (12) months from the closing of Company’s initial public offering, and will expire unless exercised before 5:00 p.m., New York City Time, on the date that is five (5) years after the date on which the Company completes its initial Business Combination, or earlier upon redemption or liquidation (the “Expiration Date”). The Common Stock and Warrants comprising the Units represented by this certificate are not transferable separately prior to                     , 20     , unless Citigroup Global Markets Inc. elects to allow separate trading earlier, subject to the Company’s filing of a current Report on Form 8-K with the Securities and Exchange Commission containing an audited balance sheet reflecting the Company’s receipt of the gross proceeds of the offering and issuing a press release announcing when separate trading will begin. The terms of the Warrants are governed by a Warrant Agreement, dated as of                     , 2010, between the Company and Continental Stock Transfer & Trust Company, as Warrant Agent, and are subject to the terms and provisions contained therein, all of which terms and provisions the holder of this certificate consents to by acceptance hereof. Copies of the Warrant Agreement are on file at the office of the Warrant Agent at 17 Battery Place, New York, New York 10004, and are available to any Warrant holder on written request and without cost.

     This certificate is not valid unless countersigned by the Transfer Agent and Registrar of the Company.

     Witness the facsimile signature of its duly authorized officers.

Secretary		President

JWC Acquisition Corp.

     The Corporation will furnish without charge to each stockholder who so requests, a statement of the powers, designations, preferences and relative, participating, optional or other special rights of each class of stock or series thereof of the Corporation and the qualifications, limitations, or restrictions of such preferences and/or rights.

     The following abbreviations, when used in the inscription on the face of this certificate, shall be construed as though they were written out in full according to applicable laws or regulations:

TEN COM		—		as tenants in common		UNIF GIFT MIN ACT		—		Custodian
TEN ENT		—		as tenants by the entireties						(Cust)
										(Minor)
										Under Uniform Gifts to Minors
JT TEN		—		as joint tenants with right of survivorship and not as tenants in common						Act
										(State)

Additional abbreviations may also be used though not in the above list.

     For value received,                      hereby sell, assign and transfer unto                     

PLEASE INSERT SOCIAL SECURITY OR OTHER IDENTIFYING NUMBER OF ASSIGNEE

(PLEASE PRINT OR TYPEWRITE NAME AND ADDRESS, INCLUDING ZIP CODE, OF ASSIGNEE)

                                                                                                      Units represented by the within Certificate, and do hereby irrevocably constitute and appoint

                                                                                                                          Attorney to transfer the said Units on the books of the within named Corporation with full power of substitution in the premises.

Dated                                         

		Notice:		The signature to this assignment must correspond with the name as written upon the face of the certificate in every particular, without alteration or enlargement or any change whatever.

Signature(s) Guaranteed:
THE SIGNATURE(S) MUST BE GUARANTEED BY AN ELIGIBLE GUARANTOR INSTITUTION (BANKS, STOCKBROKERS, SAVINGS AND LOAN ASSOCIATIONS AND CREDIT UNIONS WITH MEMBERSHIP IN AN APPROVED SIGNATURE GUARANTEE MEDALLION PROGRAM, PURSUANT TO S.E.C. RULE 17Ad-15).