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Hot & Cold Aisle Containment

Sealed aisles, skylights and doors that stop hot and cold air mixing.

Quick answer

Aisle containment uses a 1,200 mm aisle, 2,000 mm to 2,200 mm frame height and 900 × 2,000 mm doors. Good sealing keeps leakage below about 5% of supply air, holds intake variation within 1 °C to 2 °C, and can cut cooling energy by 10% to 20%.

Last reviewed: 2026-11-07

Overview

Containment is the lowest-cost way to improve cooling efficiency in an existing room. RackSource supplies cold-aisle and hot-aisle systems with modular skylights, end doors, blanking panels, cable-entry seals and row-level air-conditioning integration.

Skylights can be designed to open automatically on fire alarm, allowing suppressant to reach the aisle. Doors use tempered glass with optional access control, and the frame is independent of cabinet load-bearing.

JZ-CA Series Cold Aisle Containment System

Specifications

Aisle type Cold aisle or hot aisle
Skylight Modular aluminum frame, tempered glass or PC panel
Doors Sliding or swing, glass, optional access control
Fire linkage Automatic skylight release on alarm
Cooling Row-level air-cooled or chilled-water units
Cable management Cross-aisle ladder and M-shaped troughs

Products in this category

JZ-CA cold aisle containment with glass skylights JZ-CA Series Cold Aisle Containment System Modular skylights, doors and seals that separate cold supply from hot return. View details

Questions buyers ask

Cold aisle or hot aisle containment?
Cold-aisle containment is easier to retrofit and keeps cold air where technicians work. Hot-aisle containment is often used in new halls because it captures heat at the source and can support higher densities. The choice depends on the room layout and cooling type.

Does containment work with existing cabinets?
In most cases yes, provided cabinet heights and depths are consistent and the row can be fitted with a frame. Mixed cabinet heights require transition panels. A site survey is needed before fabrication.

What happens to the skylights during a fire?
Skylights are held by a release mechanism linked to the fire alarm. On alarm, panels open so clean-agent or water spray can enter the aisle. The release must be tested with the fire system during commissioning.

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