Everything about Cat6 — the default cable of the modern world: construction, performance, PoE, and the secondary market we lead.
More Ethernet runs on Cat6 than any other category. Ratified in the early 2000s, specified to 250 MHz, and built with a spline that tamed crosstalk — Cat6 hit the sweet spot of performance and price so squarely that two decades later it is still the standard specification for new commercial and residential installs. This is everything about it.
New boxes, partial spools, pull-out — any quantity. Sell your Cat6 →
Four twisted pairs of 23 AWG solid copper (occasionally 24 AWG), each pair twisted at a different rate to cancel crosstalk, separated by a longitudinal spline — the plastic cross-web that is Cat6’s visual signature. Outer jacket in PVC (riser/CMR), low-smoke PVC or FEP (plenum/CMP), or LSZH for international work. Unshielded (U/UTP) is the standard; shielded variants (F/UTP) exist for noisy environments. The jacket print tells the story: category, AWG, pair count, shielding, fire rating, footage marks, and the UL/ETL listing — read it before you buy, sell, or install.
Cat6’s thicker 23-gauge conductors (vs 24 AWG in much Cat5e) mean lower resistance — better PoE performance and less voltage drop. It also makes the cable stiffer and the box heavier: a 1000-ft Cat6 box runs ~30+ lbs. Weight is a quick authenticity check — suspiciously light “Cat6” is often CCA.
That plastic cross inside is not packaging — it maintains pair separation along the entire run, which is what holds crosstalk down to Cat6 spec. Crush it with a staple or kink it hard and you have Cat5e performance in a Cat6 jacket. Handle accordingly.
In-wall Cat6 is solid conductor (better electrical performance, punch-down friendly). Patch cords are stranded (flexible, survives bending). Never use stranded for long in-wall runs, never punch down stranded into a 110 block — see our solid vs stranded guide.
Certified performance: 1 Gbps to 100 meters (the full channel), 10 Gbps to 55 meters (shorter runs — fine for most in-building 10-gig). 250 MHz bandwidth. PoE/PoE+ fully supported; PoE++ (90W) workable with attention to bundle sizes. Real-world: Cat6 runs the overwhelming majority of office networks, schools, hospitals, and homes built since ~2005 — and will continue to, because gigabit remains plenty for most endpoints and 10-gig covers the uplinks.
Cat6 is the volume king of the secondary cable market: contractor overstock (the #1 source — partial boxes from finished jobs), distributor surplus, and building pull-out from renovations. New 1000-ft boxes trade steadily; partial spools sell by the foot; clean pull-out (labeled, uncut) has real value while burnt or painted pull-out is scrap. Ironcrest buys all of it — see how to sell and scrap values. When buying: check the jacket print for “CAT6”, “23 AWG”, “SOLID”, and a real UL/ETL listing — and weigh the box.
The standard for wired Ethernet in offices, schools, hospitals, and homes — gigabit to 100m, 10-gigabit to 55m, full PoE support.
1 Gbps to the full 100-meter channel; 10 Gbps to about 55 meters. 250 MHz bandwidth.
Absolutely — it remains the default specification for new installs. Cat6a only wins where full-distance 10-gig or heavy PoE++ is required.
Jacket print (CAT6, 23 AWG, UL/ETL listing), the internal spline, and weight (~30+ lbs per 1000-ft box). Suspiciously light or cheap cable is often CCA — avoid it.
Yes, with attention to bundle sizes and heat — 23 AWG conductors handle it better than Cat5e. For dense PoE++ bundles, Cat6a is the safer choice.
Jacket markings (category, footage, plenum/riser), box labels, and quantity. The jacket print is the entire specification.
Call or text 312-880-8174 or use the quote form. Tell us the category, footage, and whether it is new or pull-out.
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