United States securities and exchange commission logo July 12, 2021 Scott Sannes Chief Financial Officer Janus International Group, Inc. 135 Janus International Blvd. Temple, GA 30179 Re: Janus International Group, Inc. Registration Statement on Form S-1 Filed July 7, 2021 File No. 333-257731 Dear Mr. Sannes: This is to advise you that we have not reviewed and will not review your registration statement. Please refer to Rules 460 and 461 regarding requests for acceleration. We remind you that the company and its management are responsible for the accuracy and adequacy of their disclosures, notwithstanding any review, comments, action or absence of action by the staff. Please contact Charles Eastman at (202) 551-3794 with any questions. Sincerely, Division of Corporation Finance Office of Manufacturing