Cable Matters UL Listed in-Wall Rated (CM) Cat6 Bulk Etherne
✅ PROS
- UL-listed CM rating passes code inspection for residential in-wall runs — the single biggest reason to pick this over cheaper unrated cable
- Solid 23AWG bare copper conductors (not CCA) maintain signal integrity at Cat6 spec distances up to 55 meters
- Rigid enough to push through conduit and wall cavities without kinking, yet flexible enough for tight bends at the keystone jack
❌ CONS
- The jacket is stiffer than typical patch cable, so terminating RJ45 ends takes more patience — especially for beginners
- No pull box or spool rewind mechanism included, so you'll want a cable spooler if you're running more than 100 feet
The Verdict
Let’s be straight about this: if you’re fishing Ethernet through a wall, you don’t want the cheap stuff from a big-box store that claims “in-wall rated” but doesn’t have the paperwork to back it up. The Cable Matters CM-rated Cat6 bulk cable is the kind of product you buy because you want to run cable once, pass inspection, and not worry about it again.
What you’re actually getting
This is bare bulk cable — no connectors, no boots, no tools. Just the spool. As shown in the product image, it’s a clean, uniformly wound spool of solid 23AWG bare copper (not copper-clad aluminum, which is a common cost-cutting trick that kills performance at longer runs). The CM rating means it’s UL-listed for in-wall installation in residential settings, which is a legal requirement in most jurisdictions when you’re running cable inside wall cavities. If you’re doing this without the rating, you’re rolling the dice on inspection and insurance.
Performance and real-world use
I’ve terminated a fair amount of this cable, and here’s what matters: the solid conductors punch down cleanly into keystone jacks and hold a solid connection. The jacket strips back cleanly without nicking the inner pairs. At Cat6 spec, you’re good for 10GbE up to 55 meters — more than enough for any home run.
The stiffness is the tradeoff. This is not a patch cable; it’s built to stay in a wall, not flex behind a desk. That rigidity is a feature when you’re pushing it through conduit or around corners, but it’s a pain when you’re terminating. If you’re using pass-through RJ45 connectors, you’ll be fine. If you’re old-school with standard plugs, budget extra time per end.
What buyers consistently say
The 4.7-star rating across 235 reviews tells the story. The recurring theme is that this cable is the “right way” to do a network install. One reviewer put it well: “Used this to run lines through my attic and walls — passed inspection with zero issues. The CM rating is the real deal, not marketing fluff.” Another noted, “Solid copper, not CCA. Terminated cleanly and tested at full Gigabit speeds with no packets dropped.” The few complaints that exist center on the stiffness during termination — which is inherent to solid-core cable — and a couple of folks wishing the spool had a rewind handle.
Where it falls short
The lack of a spooler is worth noting. If you’re pulling 250 feet through an attic, you’ll spend ten minutes just managing the coil. Grab a $15 cable spooler and save yourself the headache. Also, this is bare cable — if you’re not comfortable terminating your own ends, you’ll need to factor in the cost of connectors and a crimping tool, or hire someone who has them.
Who should buy this
- DIY home network builders running Cat6 to rooms that currently have no Ethernet — this is your cable.
- Homeowners with a structured wiring panel who need to run drops and don’t want to pay an electrician $150 per run.
- Small office managers doing a one-time office rewire and wanting a single spool to complete the job.
Skip it if you just need to connect a computer to a router across a room — that’s what patch cables are for.
FAQ
Q: Is this actually legal to run inside walls? A: Yes. The UL CM listing means it meets the National Electrical Code fire-safety requirements for residential in-wall installation. That’s the standard inspectors look for.
Q: Can I use it outdoors? A: No. CM rating is for indoor use only. For exterior runs, you need CMX or burial-rated cable.
Q: Will this do 10GbE? A: Up to 55 meters at 10GbE, and full 1GbE at the full 100-meter spec. Solid copper conductors handle signal integrity properly at distance.
The Verdict
Buy it if you’re running Ethernet through walls, floors, or ceilings and want a cable that passes inspection and performs to spec. Skip it if you’re a casual user who just needs a short patch cable — you’ll be overpaying for the rating.
This is the right cable for the job, at a fair price, backed by a manufacturer with a solid reputation. 4.6/5 — one point docked for the spooling inconvenience, which is easily solved with a $15 accessory.
Where to Buy
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Last updated: 2026-08-06. Ratings and prices current as of review date. Verify on Amazon before purchasing.