Steel Guard’s data center hot aisle containment curtains provide an economical and highly effective solution for maintaining optimal temperatures in your server rooms. Designed to guide hot aisle exhaust airflow back to the CRAC (Computer Room Air Conditioner) return, our containment curtains are perfect for ensuring high performance for all your critical components.
Hot aisle containment is one of the most effective strategies for new enterprise data centers — isolating server exhaust air before it can mix with cold supply air and dramatically reducing the workload on your air conditioning systems. Explore our full range of data center containment curtains including cold aisle solutions.
Steel Guard fuse-link ceiling mounts provide an added safety measure — curtains drop to the floor when temperatures exceed 135°F, offering proactive fire safety that integrates seamlessly with existing fire suppression systems. This activation temperature is below the threshold of most fire suppression systems, ensuring curtains clear the area before suppression activates.
Choose from a variety of robust materials to match your containment requirements:
Data center hot aisle containment curtains are critical for server rooms looking to optimize cooling efficiency and prevent overheating. Whether you’re retrofitting an older space or planning new construction, Steel Guard’s containment curtains ensure cost savings, increased cooling efficiency, and better protection for your servers.
Not sure if hot aisle containment is the right approach? Take a look at our data center cold aisle containment curtains to compare approaches for your server room.
Ready to optimize your server room? Call us at 708-589-4588 or request a free quote online — our team will configure the right hot aisle containment solution for your data center.

20/40/80 Mil PVC , Most Common Material Allows Clear View into Equipment Room. Flame resistant & double polished. Used in Strip Doors or Clear Curtains. Meets CFM, & NFPA-701 standards. Available in Anti-Static Versions.

16 oz STEEL-SCRIM Vinyl – Our proprietary tri-axial 3-Way scrim design. Over 406lbs tensile strength sq/in. Meets CFM, NFPA-701,ASTM-E-84 Class 1, for flame resistance. Allows Privacy in Server Room Areas. Alternative materials are 14 oz and 18 oz opaque FR vinyls. < See Opaque Vinyl Materials Here >

Energy Shield Type I Fold-A-Way – 2 layers of 18 oz coated vinyl sandwiched around 1 layer of 3M Thinsulate Ultra Insulation. Used when the highest leve of temperture containment is needed with a tight seal. R Value = 3.0 and a temperature separtion of 17 degrees F (8 degrees C) – Folds away on our Roller Track System. < See Insulated Materials Here >
Universal Strip or Clear Curtain Mount made from Aluminum. Mounts with the Fusible Link to Drop Ceilings, or Data Center Aisles.

Universal Strip or Clear Curtain Mount made from an Extremely Strong Plastic Polymeer. Mounts with the Fusible Link to Drop Ceilings, or Data Center Aisles.

Heavy-Duty 16 gage roller track system which modularly connects track lenghts to your desired shape and length. Used for Easy Access when an Air Tight Seal is Not Necessary. (Dimension O.D. – H-1.25″ x W-1.44″) Available in Suspended Mounts – Threaded Rod or Beam to Chain, Ceiling, Floor Mount, and Beam Flange Mount. See Hardware Options Here
Hot aisle containment curtains isolate exhaust air expelled from the rear of server racks and direct it back to CRAC return units before it can mix with cold supply air. This prevents hot and cold air mixing, dramatically improving cooling efficiency, reducing energy consumption, and maintaining consistent server operating temperatures.
Steel Guard hot aisle containment curtains install using direct ceiling mounts, drop-down lanyard mounts, or intelligent fuse-link ceiling mounts. Standard installations are completed by your maintenance staff without structural modifications. Retrofit installations use fuse-link mounts that release at 135°F, ensuring fire safety compliance without modifying existing suppression systems.
With proper hot aisle containment, server rooms should maintain cold supply air temperatures between 70°F and 75°F at server air inlets. Hot aisle exhaust temperatures typically run significantly higher — containment curtains prevent this hot air from recirculating into the cold supply zone and raising overall room temperatures.
Hot aisle containment is generally preferred for new construction or major renovations due to its modern approach to airflow management and ease of integration during initial build-out. Cold aisle containment is typically easier to retrofit into existing facilities without modifying fire suppression systems. Both strategies significantly reduce energy costs and improve server performance.