The Zurn Z874-18 is an 18-inch wide (approximately 22¼-inch overall channel width) “Utility Chase” trench drain system designed for high-volume surface drainage in exterior, transportation, or heavy-duty applications. It features modular 80-inch long sections fabricated from UV-stable high-density polyethylene (HDPE) with a radiused bottom and optional built-in 1 % slope for self-draining performance. The system includes a heavy-duty steel frame with anchor studs, mechanical inter-locking joints, integral rebar clips for elevation placement, and 4-corner grate lockdown for dynamic-loading conditions.

Key Features

• 18″ throat width (22.25″ channel reveal) to handle large surface flows

• Lightweight HDPE structural composite channel with smooth, radiused interior for efficient drainage

• Modular-section design with mechanical interlocks and integral rebar clips for fast installation

• Heavy-duty steel frame with anchor studs and 4-corner grate lock-down for dynamic loads

• Available with built-in slope (1.00 %) option and full accessory set (end caps, outlets, gratings)

Note: Zurn trench drain products are subject to a $750 minimum order.

Downloads:

• Specification Sheet - Z874-18
• Specification Sheet - Z874-18-HDG
• Specified Transportation Systems Flyer
• Specified Commercial Systems Brochure
• Spec-Tran Brochure
• 22-1_4_ Wide Grates
• Installation Instructions - Z874
• Product Definitions and Weight Classification Guide