4-Post Open Frame Racks
4-Post Open Frame Racks combine the mounting security of a cabinet with the accessibility of a rack. Used in communication data center and telecommunication room applications, these adjustable depth racks support deeper, heavier network equipment. They can be ganged with 2-Post Open Frame Racks or other 4-Post Open Frame Racks to expand existing systems.
4-Post Open Frame Racks are available with square hole or 12-24 tapped rails, in both 19” and 23” EIA panel widths. A variety of shelves and vertical cable managers are available to complete the setup. 4-Post Open Frame Racks ship flat. Assembly required.
Need a 4-Post Open Frame Rack Fast?
We stock the 7′ size. Call us and we can get your order processed immediately – 507-287-3535.
Need A More Robust Rack?
If you need a little more heavy-duty rack, check out our Security/AV Racks with sturdy construction capable of holding up to 1,000 lbs.
Features
4 Post Open Frame Rack Features
- Available in six heights and two widths
- Adjustable Depth Min/Max = 20.50″ / 32.50″ [521 mm / 826 mm]
- Numbered rack spaces – front and rear
- Channels constructed from heavy duty aluminum extrusion
- Heavy duty base includes holes for securing to floor
- Ships flat to save space
- 50 pack of extra hardware included
- UL listed
Rack Paint / Finish
- Color: Black
- Our products are finished in textured powder paint. Powder coating provides a durable high-quality finish.
4 Post Load Rating
- 800 lbs. [363 kg.]
Industry Standards
- EIA 310-D
- RoHS compliant
- UL listed
How to Order
- Choose from a variety of sizes – some of which are in stock.
- Contact Us
Sizes Available
Adjustable Depth 4-Post Open Frame Racks – UL Listed
Includes: Rack with Square Hole Rails, Extra Black Rack Screws and Cage Nuts (50 pk), Assembly Instructions. Ships flat. Assembly required.
| 19″ EIA Part Number | 24″ EIA Part Number | Rack Units |
| RRD1903A-CN-BK* | RRD2303A-CN-BK* | 18U [3 ft.] |
| RRD1904A-CN-BK* | RRD2304A-CN-BK* | 24U [4 ft.] |
| RRD1906A-CN-BK* | RRD2306A-CN-BK* | 38U [6 ft.] |
| RRD1907A-CN-BK | RRD2307A-CN-BK | 45U [7 ft.] |
| RRD1908A-CN-BK* | RRD2308A-CN-BK* | 52U [8 ft.] |
| RRD1909A-CN-BK* | RRD2309A-CN-BK* | 58U [9 ft.] |
*Minimum order quantity required.
Ask about tapped rail versions of the part number above.
4-Post Open Frame Racks Compatible Parts
| Select | Part Number | Description | Files | Read More |
|---|---|---|---|---|
| CMA-001-C 459281 |
Velcro Cable Ties (20 pk) Cable Manager Accessory Style C [Universal] | STP | ||
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Files: STP Product Type Cable Managers Used Where Internal Requires Rear Attach Point No Style Accessory Material Velcro Fits Frame Depth Any Mounting Hardware Included Included - If not installed prior to shipment. Requires Paint No (Not Painted) Requires Laminate No UL Listed No RoHS Compliant Yes REACH Compliant Yes |
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| HCMC1901-BK 464062 |
1U Single Sided Horizontal Cable Manager - 19†EIA UL Listed | Includes: Metal Rings and Snap-On Hinging Cover | N/A | ||
|
Files: N/A Product Type Cable Managers Used Where Front, Rear Requires Rear Attach Point Yes Style Horizontal Single Sided EIA Width 19 U 1 Fits Frame Depth Any Mounting Hardware Included Not Included Requires Paint No (Black Only) Requires Laminate No UL Listed No RoHS Compliant No REACH Compliant No |
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| HCMC1901D-BK 464063 |
1U Double Sided Horizontal Cable Manager - 19†EIA UL Listed | Includes: Metal Rings and Snap-On Hinging Cover | N/A | ||
|
Files: N/A Product Type Cable Managers Used Where Front, Rear Requires Rear Attach Point Yes Style Horizontal Double Sided EIA Width 19 U 1 Fits Frame Depth Any Mounting Hardware Included Not Included Requires Paint No (Black Only) Requires Laminate No UL Listed No RoHS Compliant No REACH Compliant No |
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| HCMC1902-BK 464064 |
2U Single Sided Horizontal Cable Manager - 19†EIA UL Listed | Includes: Metal Rings and Snap-On Hinging Cover | N/A | ||
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Files: N/A Product Type Cable Managers Used Where Front, Rear Requires Rear Attach Point Yes Style Horizontal Single Sided EIA Width 19 U 2 Fits Frame Depth Any Mounting Hardware Included Not Included Requires Paint No (Black Only) Requires Laminate No UL Listed No RoHS Compliant No REACH Compliant No |
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| HCMC1902D-BK 464065 |
2U Double Sided Horizontal Cable Manager - 19†EIA UL Listed | Includes: Metal Rings and Snap-On Hinging Cover | N/A | ||
|
Files: N/A Product Type Cable Managers Used Where Front, Rear Requires Rear Attach Point Yes Style Horizontal Double Sided EIA Width 19 U 2 Fits Frame Depth Any Mounting Hardware Included Not Included Requires Paint No (Black Only) Requires Laminate No UL Listed No RoHS Compliant No REACH Compliant No |
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| HW-RSL100-PURPLE 461333 |
Rackstud - Mounting Hardware Purple Color for 12 Gauge Square Rails (100 pk) | N/A | ||
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Files: N/A Product Type Hardware Requires Rear Attach Point No Style Hardware Kit Requires Paint No (Not Painted) Requires Laminate No UL Listed No RoHS Compliant No REACH Compliant No |
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| HW-RSL100-RED 461332 |
Rackstud - Mounting Hardware Red Color for 14 Gauge Square Rails (100 pk) | N/A | ||
|
Files: N/A Product Type Hardware Requires Rear Attach Point No Style Hardware Kit Requires Paint No (Not Painted) Requires Laminate No UL Listed No RoHS Compliant No REACH Compliant No |
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| RRD1903A-BK 463213 |
4-Post Adjustable Depth Open Frame Rack (3') - 18U, 19" EIA HxWxD = [36.00" x 20.25" x 44.50"] [914mm x 514mm x 1130mm] Usable Depth Min/Max = [20.50" https://www.emcorenclosures.com/ 32.50"] [521mm / 826mm] Weight Capacity = [800 lbs.] [363 kg.] UL Listed | Ships Flat, Assembly Required Includes: Rack with 12-24 Tapped Rails, Extra Black Rack Screws (50 pk), Assembly Instructions | N/A | ||
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Files: N/A Product Type Open Frame Racks Requires Rear Attach Point No Style 4-Post Rack with Tapped Rails Material Aluminum Extrusion Finish Textured Powder Paint EIA Width 19 U 18 Front Flange Style 12-24 Tapped Side Flange Style No Flange Rail to Rail Depth Min 20.500" Rail to Rail Depth Max 32.500" Overall Height 36.000" Overall Width 20.250" Overall Depth 44.500" (Max) Weight Load Capacity 800 lbs. Static Load Requires Paint No (Black Only) Requires Laminate No UL Listed Yes RoHS Compliant Yes REACH Compliant No EIA Standard EIA-310-D |
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| RRD1903A-CN-BK 464072 |
4-Post Adjustable Depth Open Frame Rack (3') - 18U, 19" EIA HxWxD = [36.00" x 20.25" x 44.50"] [914mm x 514mm x 1130mm] Usable Depth Min/Max = [20.50" https://www.emcorenclosures.com/ 32.50"] [521mm / 826mm] Weight Capacity = [800 lbs.] [363 kg.] UL Listed | Ships Flat, Assembly Required Includes: Rack with Square Hole Rails, Extra Black Rack Screws and Cage Nuts (50 pk), Assembly Instructions | N/A | ||
|
Files: N/A Product Type Open Frame Racks Requires Rear Attach Point No Style 4-Post Rack with Square Hole Rails Material Aluminum Extrusion Finish Textured Powder Paint EIA Width 19 U 18 Front Flange Style Square Hole Side Flange Style No Flange Rail to Rail Depth Min 20.500" Rail to Rail Depth Max 32.500" Overall Height 36.000" Overall Width 20.250" Overall Depth 44.500" (Max) Weight Load Capacity 800 lbs. Static Load Requires Paint No (Black Only) Requires Laminate No UL Listed Yes RoHS Compliant Yes REACH Compliant No EIA Standard EIA-310-D |
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| RRD1904A-BK 463214 |
4-Post Adjustable Depth Open Frame Rack (4') - 24U, 19" EIA HxWxD = [36.00" x 20.25" x 44.50"] [914mm x 514mm x 1130mm] Usable Depth Min/Max = [20.50" https://www.emcorenclosures.com/ 32.50"] [521mm / 826mm] Weight Capacity = [800 lbs.] [363 kg.] UL Listed | Ships Flat, Assembly Required Includes: Rack with 12-24 Tapped Rails, Extra Black Rack Screws (50 pk), Assembly Instructions | N/A | ||
|
Files: N/A Product Type Open Frame Racks Requires Rear Attach Point No Style 4-Post Rack with Tapped Rails Material Aluminum Extrusion Finish Textured Powder Paint EIA Width 19 U 24 Front Flange Style 12-24 Tapped Side Flange Style No Flange Rail to Rail Depth Min 20.500" Rail to Rail Depth Max 32.500" Overall Height 48.000" Overall Width 20.250" Overall Depth 44.500" (Max) Weight Load Capacity 800 lbs. Static Load Requires Paint No (Black Only) Requires Laminate No UL Listed Yes RoHS Compliant Yes REACH Compliant No EIA Standard EIA-310-D |