How to choose cable trays
Updated June 2026Independently researchedNo paid placement.
Choose a cable tray or box by measuring your desk’s underside clearance, estimating the volume of cables and power bricks you need to hide, and deciding whether you want a simple open tray or an enclosed box for a cleaner look. The best pick balances easy access, sturdy installation, and enough space for your gear without dangling cords.
What size cable tray or box do you actually need?
Start by pulling out everything you plan to tuck away. A typical home-office setup with a laptop, monitor, and phone charger might fit into a medium tray, roughly the length of a long ruler. But if you have multiple power adapters (often called “bricks”) or a large surge protector, you’ll want a tray that is both longer and deeper to keep the plugs from pushing the lid off. Measure the width of your desk’s underside between the legs or support beams. Most cable trays are between two and four feet long, but you should also consider depth. A deeper tray (six or more inches) lets you hide bulky adapters, while a shallower one works for simple cord routing. Remember: a tray that is too small will be a constant annoyance; too large and it may interfere with your knees or make cable access a hassle.
Under-desk or behind-the-desk: which placement works best?
Under-desk trays screw or clamp directly to the underside of your work surface. They keep cables completely out of sight and free up floor space. This is the most popular choice for standing desks because the tray stays with the desktop as it moves. However, you’ll need to be comfortable lying on the floor to install it, and the tray’s depth can reduce your legroom if you sit with your knees high. Behind-the-desk boxes, often called cable management “raceways” or “channels”. attach to the back edge of the desk or are freestanding. They’re easier to install than under-desk trays and let you access cables without crawling underneath. The trade-off is that some cords remain visible from the sides, and the box itself protrudes from the desk, which can be a problem if your desk is against a wall.
Materials and build: what to look for in a cable tray
The best cable trays use heavy-gauge steel or solid aluminum. These materials resist sagging when loaded with power bricks and won’t break if you accidentally kick them. Powder-coated finishes help prevent scratches and look tidy for years. Avoid flimsy plastic trays for any setup with more than a few thin cables, they tend to warp or crack at the screw holes. Vented designs are a smart choice if your power strip or adapters get warm. Some trays include rubber grommets along the edges to protect cables from sharp metal, and a few come with integrated velcro straps or cable ties. Those small extras make a big difference in keeping the jumble neat.
How to install a cable tray without damaging your desk
Most under-desk trays mount with two or three screws. Before drilling, check for existing holes or metal brackets underneath your desk, many newer desks have pre-drilled attachment points. If you can’t find any, use a stud finder or simply avoid drilling near the surface’s edge to prevent splitting. For renters or metal desks, clamp-on trays are a smarter choice. They grip the desk edge or the support rails without leaving permanent holes. Adhesive-backed trays (peel-and-stick) are quick but often fail under the weight of several cables plus a power strip, they’re best for very light duty, like a single monitor cable. Whichever method you choose, run all cables into the tray before tightening it down completely; otherwise you’ll be wrestling cords through a tiny gap.
Cable management boxes vs. trays: key differences
A cable management box is essentially a tray with a lid. It completely hides the mess and keeps dust away from power strips. Boxes are excellent for shared spaces or desks visible to clients. The downside is that plugging in a new device often requires lifting the lid, and very large adapters may not fit inside. Many boxes have side slots or cutouts to let cables exit neatly. A tray is open on top, which makes it easy to add or remove cables on the fly. You can see everything at a glance, so troubleshooting a loose connection is faster. Trays are usually cheaper and take up less vertical space. The trade-off is that the cables are still partially visible unless you snake them through a channel or wrap them with ties. For a standing desk that moves up and down, a tray (without a lid) tends to work better because it does not add extra height that could hit the desk frame.
Does a cable tray work with a standing desk or a glass desk?
Standing desks pose a specific challenge: the tray must move with the desktop without interfering with the motor or the crossbar. Many adjustable-height desks have a flat steel crossbar that blocks the center. In that case, choose a tray that attaches off-center, or one designed specifically for standing desks with clamping brackets and shorter depth. Always measure the clearance between the desktop and the frame when the desk is at its lowest position, some trays are too thick to fit. Glass desks require extreme care. Clamp-on or adhesive trays are the only options because drilling is impossible. Adhesive trays often fail on glass due to weight and temperature changes. If you must use a tray on a glass desk, look for a very lightweight, short tray and secure it with strong double-sided tape rated for glass and heat. A better alternative is a floor-standing cable management tower or a small box that sits on the desktop itself.
Frequently asked questions
Can a cable tray hold a power strip or surge protector?
Yes, most medium-to-large under-desk trays have enough width and depth to fit a standard power strip. Just make sure the tray’s interior space is at least as deep as the strip’s width, and check that the built-in slots or cutouts let the cord exit without pinching.
How do I measure for a cable tray?
Use a tape measure to find the available clearance from your desk’s underside to the floor or any obstructions (like a drawer). Then measure the width you can span between mounting points. Add a couple of inches to your cable bundle’s width for breathing room. Many manufacturers provide rough dimensions in their descriptions.
Are adhesive cable trays reliable?
Adhesive trays work well for very light loads, think a single thin cable or a wireless dongle. They tend to peel off over time when loaded with multiple cables or a power strip, especially in warm or humid rooms. For a permanent setup, screw-mounted or clamp-on trays are far more dependable.
Do cable trays work on standing desks that move up and down?
Yes, but you must ensure the tray doesn’t hit the desk frame or the motor housing when the desk is at its lowest height. Look for slim-profile trays that attach securely to the desktop panel, not to the legs. Clamp-on designs are often easier to adjust later.
Can I mount a cable tray on a glass desk?
You can use clamp-on or adhesive trays, but drilling is not an option. Adhesive mounts are risky on glass because the surface gets warm and the bond can weaken. A safer approach is to use a small desktop cable box or a floor-based cable management tower that sits beside the desk.
What's the difference between a cable tray and a raceway?
A cable tray is an open or lidded trough that holds a bundle of cables underneath a desk. A raceway is a narrow channel, often adhesive-backed, that sticks to a wall or desk edge and conceals one or two cables in a slim line. Trays hide many cables at once; raceways are for tidying individual cord runs.