AF250 Performance Specifications
| Specification | AF250 Rating |
|---|---|
| Open Area | 25% |
| Bare Panel Weight | 17 lb. |
| Concentrated Load | 1,000 lbf (4.45 kN) |
| Uniform Load | 400 psf |
| Ultimate Load | 3,200 lbf (14.23 kN) |
| Minimum Safety Factor | 3:1 |
| Impact Load | 175 lb. |
| Rolling Load – CISCA Wheel A, 10 Passes | 400 lbf |
| Rolling Load – CISCA Wheel B, 10,000 Passes | 400 lbf |
| Available Sizes | 24″ and 600 mm |
| Construction | Steel |
| Fire Performance | Class A flame spread / non-combustible materials |
| Recycled Material Content | 42.3% |
For complete engineering data, download the ASM AF250 Product Specifications PDF.
Designed for Underfloor Air Distribution
The AF250 is designed for raised-floor environments where conditioned air is supplied through a pressurized underfloor plenum and delivered directly to cold aisles or equipment intake areas.
Its 25% open area makes it a good option for applications that require more controlled airflow than a solid panel while avoiding the much larger open area of high-flow grates.
Actual airflow through the panel will depend on factors such as:
- Underfloor static pressure
- Cooling-system capacity
- Damper position
- Plenum depth
- Cable and piping congestion
- Air leakage through floor openings
- Rack airflow demand
- Cold-aisle containment
For a deeper comparison of airflow-panel types, see our guide to perforated raised floor panels vs. air grates.
Optional Top-Adjusting Dampers
The AF250 is available with top-adjusting slide dampers that allow facility teams to regulate airflow through individual panels.
Adjustable dampers are particularly useful when:
- Rack densities vary across the data hall
- Cooling demand changes over time
- Cold aisles require balancing
- Equipment is frequently added or relocated
- Facility teams want to reduce unnecessary airflow in lower-demand areas
Because the damper can be adjusted from above the floor, teams can change airflow without repeatedly removing the panel.
Raised Floor Compatibility
The AF250 is available for compatible FS-Series and S-Series raised access floor systems and can be supplied in either 24-inch or 600 mm configurations.
Before ordering, verify:
- Exact panel dimensions
- Existing raised-floor manufacturer and model
- Panel thickness
- Pedestal-head configuration
- Stringer configuration
- Surface-finish thickness
- Required load rating
- Whether an airflow damper is needed
A nominal 24-inch floor panel is not automatically interchangeable with every 24-inch raised-floor system.
If you are unsure which system you have, use our Raised Access Floor Panel Identification Guide before placing an order.
Finish Options
The AF250 is available in several surface-finish configurations, depending on project requirements.
HPL Finish Options
Available HPL configurations include:
- 1/16″ HPL
- 1/8″ HPL
- ASM Smart-Trim
- ASM Dura-Trim
- ASM Mono
Vinyl Finish Options
Available vinyl options include:
- VPT Con-Tile — static conductive
- VPT Stat-Tile — static dissipative
The panel can also be supplied with a bare surface when no applied finish is required.
When selecting a finish, consider ESD requirements, surrounding floor height, rolling traffic, cleaning procedures, and compatibility with existing panels.
Understructure Options
The AF250 can be used with several understructure configurations:
- Free-standing / stringerless systems
- Rigid-grid bolted stringer systems
- 2′ × 2′
- 2′ × 4′
- 4′ × 4′ basketweave
For more information about how panels, pedestals, stringers, and understructure configurations work together, see our guide to raised access floor systems.
AF250 vs. AF320: Which Airflow Panel Should You Choose?
The AF250 and AF320 are both steel perforated airflow panels, but they serve somewhat different requirements.
| Feature | AF250 | AF320 |
|---|---|---|
| Open Area | 25% | 32% |
| Panel Weight | 17 lb. | 33 lb. |
| Concentrated Load | 1,000 lbf | 1,500 lbf |
| Uniform Load | 400 psf | 800 psf |
| Ultimate Load | 3,200 lbf | 4,500 lbf |
| Best Fit | Standard to moderate airflow applications | Higher airflow and heavier-load applications |
Choose the AF250 when a 25% open-area steel panel provides sufficient airflow and you prefer a lighter panel.
Consider the ASM AF320 32% Steel Air Flow Panel when the application requires greater airflow capacity, higher concentrated loads, or stronger rolling-load performance.
For substantially higher airflow requirements, a high-open-area aluminum grate such as the AF500/AF600 may be more appropriate.
When Is the AF250 a Good Choice?
The AF250 is particularly well suited for:
- Standard data center cold aisles
- Server rooms using underfloor cooling
- Moderate rack-density environments
- Existing FS-Series or S-Series raised floors
- Facilities requiring adjustable airflow control
- Applications where a lightweight steel airflow panel is preferred
- Replacement of compatible 25% open-area panels
- Installations requiring conductive or static-dissipative finish options
The correct airflow panel should ultimately be selected according to the cooling requirements of the facility rather than open-area percentage alone.
Frequently Asked Questions
How much open area does the ASM AF250 provide?
The AF250 provides 25% open area, making it suitable for controlled airflow delivery in data centers and other raised-floor environments using underfloor air distribution.
What is the AF250 load rating?
The AF250 is rated for a 1,000 lbf concentrated load, 400 psf uniform load, and 3,200 lbf ultimate load, with a minimum 3:1 safety factor according to the manufacturer’s specifications.
What is the difference between the AF250 and AF320?
The AF250 provides 25% open area and a 1,000 lbf concentrated load rating, while the AF320 provides 32% open area and a higher 1,500 lbf concentrated load rating. The AF320 is generally better suited for locations that require greater airflow or structural capacity.
Can the AF250 be supplied with an airflow damper?
Yes. The AF250 is available with an optional top-adjusting slide damper, allowing you to regulate airflow from above the raised floor.
Does the AF250 fit any 24-inch raised floor?
No. Nominal panel size alone does not establish compatibility. Verify panel thickness, corner design, pedestal heads, stringers, finish height, and the existing raised-floor system before ordering.
Is the AF250 available in 600 mm?
Yes. The AF250 is available in both 24-inch and 600 mm configurations.
Availability & Fitment
Product availability varies depending on warehouse inventory. For large quantities beyond current warehouse stock, orders may require approximately 16–20 weeks for fulfillment.
Because airflow panels must match the existing raised-floor system, please verify fitment before ordering. Airflow panels are non-returnable.
For quantity pricing, compatibility assistance, or project support, request a quote from Data Center Floor Tiles.
