Simplified left adapter is used to connect cable metal tray sections with different base widths. Suitable for changing the route width by 300 mm. The product is hot-dip galvanized according to GOST 9.307-2021 and is used for installation in high-humidity and low-pollution indoor environments, outdoors, and in low-corrosive environments, in accordance with GOST 15150-69. The accessory is part of a system for constructing cable routes of any complexity at industrial, civil, and commercial facilities.