APC by Schneider Electric ACCS1001 Rack Air Containment Rear Assembly
The ACCS1001 is the rear air containment assembly designed specifically for APC NetShelter SX 42U racks paired with InRow 600mm cooling units. If your data center runs a hot-aisle/cold-aisle containment strategy — or is migrating to one — this assembly closes the rear plane of the rack enclosure to prevent hot exhaust air from recirculating back into equipment intakes. That recirculation is one of the most common causes of thermal inefficiency in densely loaded racks, and sealing it off is a straightforward mechanical fix that pays dividends in cooling capacity and energy overhead.
At 47.4 lb (21.5 kg) and a deployed length of 75.24 inches (191.1 cm), the ACCS1001 is engineered for the physical envelope of the 42U NetShelter SX footprint. The black finish matches the NetShelter SX family's standard colorway, which matters in customer-facing or co-location environments where rack aesthetics are part of the site specification. This is not a universal fit component — it is sized and designed for this specific rack and cooling pairing, so verify your existing infrastructure before ordering.
When This Is the Correct Choice
Deploy the ACCS1001 when your site uses APC by Schneider Electric NetShelter SX 42U enclosures with InRow 600mm row-based cooling units and you need to implement or complete a rear containment seal. Row-based cooling architectures — where InRow units sit at the end of or alongside rack rows — depend on physical containment to direct airflow efficiently. Without the rear assembly in place, bypass air defeats the InRow unit's ability to capture and process hot exhaust, forcing the unit to work harder and increasing the risk of thermal excursions in high-density deployments.
This assembly is also the right call when retrofitting an existing NetShelter SX deployment that was originally installed without full containment — common in facilities that expanded density over time and now need to address thermal management that was adequate at lower loads but is no longer sufficient.
When to Choose a Different Model
If your rack enclosure is not a NetShelter SX 42U, or your InRow cooling unit is not the 600mm variant, this assembly will not fit correctly. APC offers containment components matched to different rack heights and cooling unit widths within the NetShelter family — verify the rack unit count and InRow width before specifying. Similarly, if your containment strategy requires front-of-rack (cold aisle) sealing rather than rear, a different assembly is needed. This ACCS1001 addresses the rear hot-aisle side only.
Key Features
- Purpose-built rear containment: Closes the rear plane of a NetShelter SX 42U rack to prevent hot exhaust air from recirculating into equipment intakes — directly reducing the thermal load on your data center cooling infrastructure without any airflow reconfiguration required.
- Matched physical envelope — 75.24 in (191.1 cm): The deployed length aligns with the 42U rack height, meaning no field cutting, trimming, or improvised sealing is required. Proper fit is the difference between effective containment and a partial solution that still allows bypass.
- 47.4 lb (21.5 kg) structural weight: The assembly has enough mass and rigidity to maintain a consistent seal under the airflow pressures generated by high-density rack loads. Lightweight improvised alternatives often bow or gap under pressure, negating the containment benefit.
- InRow 600mm compatibility: Sized for the 600mm InRow cooling unit footprint — the pairing is intentional. APC's InRow units in this width class are common in mid-density row deployments, and this assembly completes the mechanical integration between the rack and the cooling unit without requiring custom fabrication.
- Black finish — NetShelter SX colorway match: Consistent with the standard NetShelter SX aesthetic, which matters for co-location facilities, enterprise data centers with customer tours, and any site where rack presentation is part of the facility specification.
- Factory-new construction: Ships as a genuine, factory-new component — not a field-fabricated or aftermarket substitute. Containment integrity depends on precise fit, which requires manufacturing to the original design tolerances.
Integration and Compatibility
The ACCS1001 is designed for use with APC NetShelter SX 42U rack enclosures and APC InRow 600mm cooling units. If you are specifying a complete row-based containment solution, pair this rear assembly with the appropriate front containment components and any blanking panels needed to seal unused rack units — unused rack unit openings are a significant source of bypass air even when the rear is sealed. Consult APC's rack cooling accessories documentation for the full containment kit specifications for your InRow deployment.
Package dimensions are 80.00 in × 20.00 in × 5.98 in (203.2 cm × 50.8 cm × 15.2 cm) at a shipping weight of 65.23 lb (29.59 kg) — account for this in freight planning, particularly if the delivery point does not have a loading dock. The gap between product weight (47.4 lb) and shipping weight (65.23 lb) reflects packaging material for a component of this length and fragility profile.
Frequently Asked Questions
Q: What rack enclosure is the ACCS1001 compatible with?
A: The ACCS1001 is designed specifically for APC NetShelter SX 42U rack enclosures paired with APC InRow 600mm cooling units. It is not a universal fit — verify your rack model and cooling unit width before ordering.
Q: Does the ACCS1001 provide front or rear containment?
A: The ACCS1001 is a rear assembly, addressing the hot-aisle (exhaust) side of the rack. Front cold-aisle containment requires separate components.
Q: What is the shipping weight and package size for the ACCS1001?
A: The ACCS1001 ships at 65.23 lb (29.59 kg) in a package measuring 80.00 in × 20.00 in × 5.98 in (203.2 cm × 50.8 cm × 15.2 cm). Plan freight accordingly — loading dock access is recommended.
Q: Will the ACCS1001 work with a 750mm InRow unit?
A: No. The ACCS1001 is sized for the 600mm InRow variant. APC offers separate containment assemblies for other InRow widths — match the part number to your specific InRow model.
Q: Do I need blanking panels in addition to the ACCS1001 for effective containment?
A: Yes. Rear containment seals the back plane, but unused rack unit openings allow bypass air regardless. Blanking panels for all empty rack units are required to achieve effective hot-aisle isolation.
The ACCS1001 is one of those components that looks simple on paper but has an outsized effect on thermal performance in a row-based InRow deployment. At 75.24 inches deployed, it spans the full rear height of the 42U NetShelter SX — and that full-height seal is what makes or breaks containment effectiveness in high-density configurations where InRow units are already running near capacity.
Technical Highlights:
- Full 75.24 in (191.1 cm) rear span: Covers the entire rear face of a 42U NetShelter SX — no gaps, no field improvisation. Partial containment is often worse than none because it creates unpredictable airflow patterns that confuse hot/cold separation.
- 47.4 lb assembly weight: Sufficient structural mass to resist bowing under the positive pressure differential that builds behind densely loaded racks. Lightweight alternatives flex and create gap paths that defeat the seal.
- 600mm InRow pairing: The 600mm InRow units are the workhorses of mid-density row deployments — typically 20-40kW rows. This assembly is sized to integrate directly with that cooling footprint, eliminating the need for field fabrication or custom transitions.
Deployment Considerations:
- Freight planning is non-trivial: the package is 80 inches long and ships at 65.23 lb — standard parcel carriers may refuse or surcharge. Confirm delivery method and dock access before the order ships.
- This assembly addresses the rear (hot aisle) only. If your site does not also seal the front cold aisle and blank unused rack units, you will not achieve meaningful containment — the ACCS1001 is one piece of a system, not a standalone fix.
For a data center team retrofitting NetShelter SX rows that were originally deployed without containment — particularly in co-location or enterprise facilities now running above 5kW per rack average — the ACCS1001 is the correct mechanical starting point for a rear hot-aisle containment implementation.
