4-Post Open Frame Rack — CT-OF4 Series | Adjustable-Depth Heavy-Duty Frame
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SKU: CT-OF4-SERIES
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Depth-adjustable 4-post frame, 22"–40" — one SKU covers the whole equipment mix.
Why it wins in the white space
- 22"–40" adjustable depth. Rail depth adjusts to support servers, UPS units, and deep chassis on adjustable shelves.
- 15-minute solo install. Common assembly screws throughout make the build fast and foolproof.
- Freight-friendly. Knock-down packaging keeps shipping cost low and storage compact.
Project and volume pricing on every CT-40 rack system. Call (307) 206-0534 or use our contact page to request a price quote. Contractor, distributor, and wholesale program pricing available.
Technical specifications
| Material | SPCC cold-rolled steel |
| Color | RAL 9005 black or RAL 7035 grey |
| Max static load | Up to 350 kg |
| Finish | Electrostatic powder coat |
| Packaging | Knock-down |
| Compliance | CE, RoHS, REACH |
| Standards | ANSI/EIA-ECA-310-E; IEC 297-2; DIN 41491 Part 1; DIN 41494 Part 7; ETSI compatible |
Ordering information — all part numbers
| Part No. | W (mm) | D (mm) | H (mm) | U |
|---|---|---|---|---|
| CT-OF4-5512-X | 516 | 567–1024.2 | 672.9 | 12 |
| CT-OF4-5522-X | 516 | 567–1024.2 | 1117.4 | 22 |
| CT-OF4-5525-X | 516 | 567–1024.2 | 1250.8 | 25 |
| CT-OF4-5527-X | 516 | 567–1024.2 | 1339.7 | 27 |
| CT-OF4-5542-X | 516 | 567–1024.2 | 2006.4 | 42 |
| CT-OF4-5545-X | 516 | 567–1024.2 | 2139.8 | 45 |
X (color code) B: RAL 9005, G: RAL 7035.
Special Accessories
| Part No. | W (mm) | D (mm) | H (mm) | Application |
|---|---|---|---|---|
| Fixed shelf | ||||
| CTA-0117-550-X | 485 | 550–1150 | 44 | 4-post open frame rack |
| Vertical cable management | ||||
| CT-OF3-J22-X | 169 | 153 | 978 | 22U rack |
| CT-OF3-J25-X | 169 | 153 | 1067 | 25U rack |
| CT-OF3-J42-X | 169 | 153 | 1867 | 42U rack |
| CT-OF3-J45-X | 169 | 153 | 1956 | 45U rack |
| Vertically segmented cable manager (14U: 1 pc; 28U: 2 pcs; 42U: 3 pcs) | ||||
| CT-OF3-J14A3(B3)-X | 98 | 190 | 622 | |
| CT-OF3-J14A6(B6)-X | 160 | 220 | 622 | |
| CT-OF3-J14A9(B9)-X | 312 | 220 | 622 | |
Engineered to ANSI/EIA-ECA-310-E and IEC 297-2. CE, RoHS, and REACH compliant. Quality-tested before shipment and stocked for fast North American fulfillment. Browse the full Racks & Cabinets line or download the CT-40 catalog from our catalog library.
Why Pros Buy Direct from Conversions Tech
Engineered in the USA. Our U.S.-based engineering team designs and specifies our core product lines, and every product we carry — designed in-house or built to our exact specifications by certified partner factories — is quality-verified before it ships. UL/CSA listed where required, NEC compliant.
Cross-reference savings. Direct equivalents to Burndy, Hubbell, and other OEM part numbers at up to 30% less — same specs, same certifications, without the big-brand markup.
Real technical support. Need a torque spec, die reference, or an OEM quote? You’ll speak directly with the Conversions Tech engineering desk — not a script reader — for instant answers, custom kitting, and private-label options.
Fast US fulfillment. Orders in by 2PM ET ship same day from our US warehouse, nationwide ground and expedited.
