Good day,
Yes, this range model is flush against the rear wall. For more details about the installation requirements, please refer to pages 13-15 of the manual available at the link below.
Installation manual
https://downloadcenter.samsung.com/content/EM/202406/20240611172559887/DG68-01600A-01_IM_NSG6DG8700SRAA_EN-MES-CFR_240611_OK.pdf
Have a wonderful day.
-Kimberly