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What is a bottomless cable tray called

A bottomless cable tray is commonly called a ladder tray or a basket tray.

Overview

A bottomless cable tray is a type of cable support system that does not have a solid bottom, allowing cables to be laid directly across open supports. This design facilitates air circulation, heat dissipation, and easy access for maintenance or cable changes. Unlike solid-bottom trays, bottomless trays do not fully enclose the cables, making them ideal for installations where frequent modifications or inspections are required.

Types of Bottomless Cable Trays

Ladder Tray

Consists of two longitudinal side rails connected by transverse rungs, resembling a ladder. Provides strong support for heavy cables and allows for ventilation and drainage. Commonly used in industrial and utility-scale installations where large power or control cables are routed.

Basket (Wire Mesh) TrayMade from welded steel wires forming an open-grid structure. Lightweight and flexible, suitable for telecommunication, fiber optic, and low-voltage cables. Allows easy cable routing, quick installation, and frequent changes without cutting or modifying the tray.

Advantages of Bottomless Trays

Improved ventilation reduces heat buildup around cables. Ease of installation and maintenance since cables can be added or removed without cutting the tray. Cost-effective for applications with many small or lightweight cables.

Flexibility in routing cables around obstacles or through complex layouts.

Applications

Bottomless trays are widely used in industrial plants, data centers, commercial buildings, and telecommunication facilities, particularly where frequent cable changes, high airflow, or lightweight cable support is required. In summary, if you are looking for a cable tray without a bottom, the industry-standard terms are ladder tray for heavy-duty applications and basket tray for lightweight or flexible cable installations.

What is a bottomless cable tray called
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Technical note

This reference is intended for preliminary fiber and communications infrastructure research. Optical interface, fiber type, port or core capacity, electrical input and output, enclosure protection, cooling, installation limits and applicable standards must be verified for the specific project.

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