Ownership Submission
FORM 3
 UNITED STATES SECURITIES AND EXCHANGE COMMISSION
Washington, D.C. 20549

INITIAL STATEMENT OF BENEFICIAL OWNERSHIP OF SECURITIES

Filed pursuant to Section 16(a) of the Securities Exchange Act of 1934, Section 17(a) of the Public Utility Holding Company Act of 1935 or Section 30(h) of the Investment Company Act of 1940
OMB APPROVAL
OMB Number: 3235-0104
Expires: January 31, 2005
Estimated average burden hours per response... 0.5

(Print or Type Responses)
1. Name and Address of Reporting Person *
  CD&R Investment Associates X, Ltd.
 2. Date of Event Requiring Statement (Month/Day/Year)
11/16/2018		 3. Issuer Name and Ticker or Trading Symbol
NCI BUILDING SYSTEMS INC [NCS]
(Last)
(First)
(Middle)
C/O CLAYTON, DUBILIER & RICE, LLC, 375 PARK AVENUE, 18TH FLOOR		 4. Relationship of Reporting Person(s) to Issuer
(Check all applicable)
_____ Director __X__ 10% Owner
_____ Officer (give title below) _____ Other (specify below)
5. If Amendment, Date Original Filed(Month/Day/Year)
(Street)

NEW YORK, NY 10152		 6. Individual or Joint/Group Filing(Check Applicable Line)
___ Form filed by One Reporting Person
_X_ Form filed by More than One Reporting Person
(City)
(State)
(Zip)
Table I - Non-Derivative Securities Beneficially Owned
1.Title of Security
(Instr. 4)		 2. Amount of Securities Beneficially Owned
(Instr. 4)		 3. Ownership Form: Direct (D) or Indirect (I)
(Instr. 5)		 4. Nature of Indirect Beneficial Ownership
(Instr. 5)
Common Stock, $0.01 par value 39,128,929 (1)
I
By affiliate (2)

Reminder: Report on a separate line for each class of securities beneficially owned directly or indirectly. SEC 1473 (7-02)
Persons who respond to the collection of information contained in this form are not required to respond unless the form displays a currently valid OMB control number.

Table II - Derivative Securities Beneficially Owned (e.g., puts, calls, warrants, options, convertible securities)
1. Title of Derivative Security
(Instr. 4)		 2. Date Exercisable and Expiration Date
(Month/Day/Year)		 3. Title and Amount of Securities Underlying Derivative Security
(Instr. 4)		 4. Conversion or Exercise Price of Derivative Security 5. Ownership Form of Derivative Security: Direct (D) or Indirect (I)
(Instr. 5)		 6. Nature of Indirect Beneficial Ownership
(Instr. 5)
Date Exercisable Expiration Date Title Amount or Number of Shares

Reporting Owners

Reporting Owner Name / Address Relationships
Director 10% Owner Officer Other
CD&R Investment Associates X, Ltd.
C/O CLAYTON, DUBILIER & RICE, LLC
375 PARK AVENUE, 18TH FLOOR
NEW YORK, NY 10152		     X    
CD&R Pisces Holdings, L.P.
C/O CLAYTON, DUBILIER & RICE, LLC
375 PARK AVENUE, 18TH FLOOR
NEW YORK, NY 10152		     X    

Signatures

CD&R Investment Associates X, Ltd.: By: /s/ Theresa A. Gore, Vice President, Treasurer and Assistant Secretary 11/26/2018
**Signature of Reporting Person Date
CD&R Pisces Holdings, L.P.: By: CD&R Investment Associates X, Ltd., its general partner; By: /s/ Theresa A. Gore, Vice President, Treasurer and Assistant Secretary 11/26/2018
**Signature of Reporting Person Date

Explanation of Responses:

* If the form is filed by more than one reporting person, see Instruction 5(b)(v).
** Intentional misstatements or omissions of facts constitute Federal Criminal Violations. See 18 U.S.C. 1001 and 15 U.S.C. 78ff(a).
(1) 39,128,929 shares of common stock, par value $0.01 per share (the "Common Shares"), of the Issuer were issued to CD&R Pisces Holdings, L.P. ("CD&R Holdings") on November 16, 2018 in a single issuance by the Issuer upon consummation of a merger transaction pursuant to which Ply Gem Parent, LLC ("Ply Gem") merged with and into the Issuer, with the Issuer continuing its existence as a corporation organized under the laws of the State of Delaware.
(2) CD&R Investment Associates X, Ltd. ("CD&R Holdings GP"), as the general partner of CD&R Holdings, may be deemed to beneficially own the Common Shares of which CD&R Holdings has beneficial ownership as shown in Table 1 of this Form 3. CD&R Holdings GP expressly disclaims beneficial ownership of such Common Shares. Investment and voting decisions with respect to the Common Shares held by CD&R Holdings or CD&R Holdings GP are made by an investment committee comprised of more than ten investment professionals of Clayton, Dubilier & Rice, LLC (the "Investment Committee"). All members of the Investment Committee also expressly disclaim beneficial ownership of the Common Shares of which CD&R Holdings has beneficial ownership as shown in Table 1 of this Form 3.

Note: File three copies of this Form, one of which must be manually signed. If space is insufficient, See Instruction 6 for procedure.

Potential persons who are to respond to the collection of information contained in this form are not required to respond unless the form displays a currently valid OMB number.