APC by Schneider Electric ACPL75168 Uniflair Return Supply Plenum Chamber
Overview
The ACPL75168 is a Uniflair-series plenum chamber designed for structured hot-aisle or cold-aisle containment airflow management in data center and server room environments. At 101.7 inches wide and built for Frame Size 7 Uniflair cooling infrastructure, this unit routes return or supply air between precision cooling units and the raised-floor or overhead plenum — eliminating the bypass airflow losses that quietly undermine cooling efficiency across large deployments. If your cooling row has developed hot spots despite adequate tonnage, uncontrolled bypass is a likely culprit, and a plenum chamber like this is the structural fix rather than a band-aid setpoint change.
The ACPL75168 ships in gray to match standard Uniflair equipment aesthetics, and its 34.1-inch depth accommodates the footprint typical of mid-to-large precision cooling configurations. This is not a universal accessory — it is sized and rated specifically for Frame Size 7 Uniflair installations, so confirm your cooling unit's frame designation before ordering.
Key Features
- Frame Size 7 Compatibility: Purpose-built for Frame Size 7 Uniflair units — not a cut-to-fit universal piece. That specificity matters because a correctly dimensioned plenum chamber seals the airflow path without field-fabricated gaps that reintroduce bypass losses. If you are running Frame Size 7 cooling rows, this is the matched component.
- 101.7-Inch Width: At just under 8.5 feet wide, this chamber spans the full face of a large precision cooling unit, ensuring the entire supply or return air column is captured and directed. Undersized plenums leave exposed edges where hot and cold air mix — this width eliminates that failure mode for Frame Size 7 configurations.
- 34.1-Inch Depth: The depth matches Uniflair cooling unit footprints, keeping the plenum flush with the equipment row and maintaining the tight mechanical interface needed for effective containment. A mismatched depth forces field shimming that compromises the seal.
- 12-Inch Height: A 12-inch vertical profile keeps the plenum manageable within constrained ceiling or raised-floor clearances, while still providing adequate cross-sectional area for the airflow volumes associated with Frame Size 7 cooling capacity.
- 79.37 lb Assembled Weight: At just under 80 lbs, this is a two-person installation — plan accordingly for lift and positioning before it is fastened in place. The weight is consistent with the heavy-gauge sheet metal construction typical of Uniflair mechanical accessories.
- Gray Finish: Color-matched to standard Uniflair equipment gray, so the completed installation presents a unified mechanical appearance — relevant in customer-facing or co-location environments where equipment aesthetics are part of the contract.
- M4 Fastener Hardware Included: Four M4 fasteners ship with the unit, providing the correct hardware for attachment to the Uniflair frame. Using the included fasteners matters — substituting field hardware of incorrect thread pitch or length can compromise the mechanical interface and void installation compliance.
Integration and Compatibility
The ACPL75168 is designed exclusively for integration with APC by Schneider Electric Uniflair precision cooling systems in Frame Size 7 configurations. Verify your existing Uniflair unit's frame size designation in its documentation before ordering — Uniflair frame sizing is not interchangeable, and a plenum ordered for the wrong frame size will not align correctly with the cooling unit's supply or return air openings. This component does not carry independent electrical connections; it is a passive mechanical airflow channel that integrates into the containment architecture of the cooling row. Installation requires access to the plenum interface points on the Uniflair unit and adequate overhead or underfloor clearance for positioning the 12-inch-tall, 101.7-inch-wide assembly. Consult the Uniflair installation documentation for torque specifications and attachment sequence — the four included M4 fasteners correspond to designated mounting points on the frame.
What's in the Box
- 1x ACPL75168 Plenum Chamber
- 4x M4 Fasteners
Frequently Asked Questions
Q: What frame size is the ACPL75168 compatible with?
A: The ACPL75168 is designed specifically for Frame Size 7 Uniflair precision cooling units. It is not a universal-fit plenum and will not align correctly with other frame sizes. Verify your Uniflair unit's frame designation before ordering.
Q: What are the physical dimensions of the ACPL75168?
A: The ACPL75168 measures 101.7 inches wide, 34.1 inches deep, and 12 inches tall, with an approximate weight of 79.37 lbs.
Q: Does the ACPL75168 include mounting hardware?
A: Yes. The unit ships with four M4 fasteners for attachment to the Uniflair frame. No additional fasteners are required for standard installation.
Q: Is the ACPL75168 a supply or return plenum?
A: The ACPL75168 is described by APC as a return/supply plenum chamber. Consult your Uniflair cooling row design documentation to confirm the intended airflow direction for your specific installation layout.
Q: How many people are needed to install the ACPL75168?
A: At approximately 79.37 lbs and over 101 inches wide, this is a two-person lift and positioning task. Single-person installation is not practical and creates alignment risk before fasteners are seated.
The ACPL75168 is a mechanical fit part first and a performance component second — its 101.7-inch width and Frame Size 7 designation mean it either fits your Uniflair cooling row exactly or it does not belong in the order. I have seen facilities teams attempt to adapt wrong-frame plenums with field shims and foam tape, and the result is always the same: partial bypass losses that show up as persistent hot spots two racks over from the cooling unit.
Technical Highlights:
- 101.7" Span: Covers the full face of a Frame Size 7 Uniflair unit, so the entire supply or return air column is captured — no exposed edges for hot and cold air to short-circuit around the plenum boundary.
- 12" Profile Height: Keeps the assembly within the vertical clearance envelope typical of raised-floor data center infrastructure while still providing enough cross-section for high-volume airflow associated with Frame Size 7 cooling capacity.
- Included M4 Fasteners (×4): Correct thread spec for the Uniflair frame interface — substituting field hardware risks stripping the captive inserts in the cooling unit frame and complicates any future maintenance access.
Deployment Considerations:
- At 79.37 lbs and 101.7 inches across, stage this unit horizontally near the installation point before lift — attempting to maneuver it in a tight hot aisle after unboxing at a distance adds real injury risk.
- Frame Size 7 is a specific Uniflair mechanical designation, not a generic size. Pull the exact model number of your Uniflair cooling unit and cross-reference Schneider Electric's Uniflair configurator before ordering — the wrong frame size ships as a complete return, not a field adjustment.
This plenum chamber is the right call for facilities commissioning or expanding a Frame Size 7 Uniflair cooling row where bypass airflow is measurably degrading cooling performance — particularly in high-density rows where the thermal margin between cooling capacity and IT load is already tight.
