A guide rail support for a guide rail (109; 209; 409) of an elevator system, the guide rail support comprising: a guide rail bracket (204; 404) having a first side, a second side opposite the first side, a first mounting portion, and a second mounting portion, the first mounting portion configured to fixedly attach to a wall of an elevator shaft, the guide rail bracket (204; 404) having at least two inclined apertures (220; 520) formed in the second mounting portion; an adjustment bracket (206; 406; 506) configured to contact the second side of the guide rail bracket (204; 404) at the second mounting portion, the adjustment bracket (206; 406; 506) having at least two inclined apertures (222; 522) configured to align with the inclined apertures (220; 520) of the guide rail bracket (204; 404) to define a stem aperture; a first rotating member (202; 302; 402) configured to be installed through one of the stem apertures; and a second rotating member (202; 302; 402) configured to be installed through the other of the stem apertures, wherein each rotating member (202; 302; 402) has (i) a first end defining a rotating head configured to movably engage with a base of a guide rail (109; 209; 409), (ii) an integrally formed stem (214; 314; 414) configured to pass through the respective stem aperture and define a second end, and (iii) a middle integrally formed between the first end and the second end, the middle defining a length that is greater than a thickness of the guide rail bracket (204; 404) and the adjustment bracket (206; 406; 506); wherein each rotating member (202; 302; 402) includes a clamp like structure configured to engage with the guide rail (109; 209; 409); wherein the middle of each rotating member (202; 302; 402) includes a stop surface (348; 448) configured to stop a part of a stem fastener (216; 416) that engages with the stem (214; 314; 414) of the rotating member (202; 302; 402) such that a gap (H 1) is formed between the stem fastener (216; 416) and a surface of the adjustment bracket (206; 406; 506); and wherein the gap (H 1) enables a space such that each rotating member (202; 302; 402) has freedom to rotate relative to the guide rail bracket (204; 404) and the adjustment bracket (206; 406; 506). a guide rail bracket (204; 404) having a first side, a second side opposite the first side, a first mounting portion, and a second mounting portion, the first mounting portion configured to fixedly attach to a wall of an elevator shaft, the guide rail bracket (204; 404) having at least two inclined apertures (220; 520) formed in the second mounting portion; an adjustment bracket (206; 406; 506) configured to contact the second side of the guide rail bracket (204; 404) at the second mounting portion, the adjustment bracket (206; 406; 506) having at least two inclined apertures (222; 522) configured to align with the inclined apertures (220; 520) of the guide rail bracket (204; 404) to define a stem aperture; a first rotating member (202; 302; 402) configured to be installed through one of the stem apertures; and a second rotating member (202; 302; 402) configured to be installed through the other of the stem apertures, wherein each rotating member (202; 302; 402) has (i) a first end defining a rotating head configured to movably engage with a base of a guide rail (109; 209; 409), (ii) an integrally formed stem (214; 314; 414) configured to pass through the respective stem aperture and define a second end, and (iii) a middle integrally formed between the first end and the second end, the middle defining a length that is greater than a thickness of the guide rail bracket (204; 404) and the adjustment bracket (206; 406; 506); wherein each rotating member (202; 302; 402) includes a clamp like structure configured to engage with the guide rail (109; 209; 409); wherein the middle of each rotating member (202; 302; 402) includes a stop surface (348; 448) configured to stop a part of a stem fastener (216; 416) that engages with the stem (214; 314; 414) of the rotating member (202; 302; 402) such that a gap (H 1) is formed between the stem fastener (216; 416) and a surface of the adjustment bracket (206; 406; 506); and wherein the gap (H 1) enables a space such that each rotating member (202; 302; 402) has freedom to rotate relative to the guide rail bracket (204; 404) and the adjustment bracket (206; 406; 506).