HotLok 10035 1U Blanking Panel Specifications
| Specification | HotLok 10035 |
|---|---|
| Product Type | Blanking Panel with Temperature Strip |
| Manufacturer | Upsite Technologies |
| Part Number | 10035 |
| Rack Height | 1U |
| Rack Width | 19″ |
| Dimensions | 19″ Ă— 1.75″ |
| Metric Dimensions | 482.5 mm Ă— 44.45 mm |
| Color | Black |
| Material | High-Impact Polystyrene |
| Rack Compatibility | EIA-310-E |
| Installation | Tool-Free Snap-In |
| Temperature Monitoring | Integrated Liquid-Crystal Strip |
| Fire Rating | UL 94 HB |
| Maximum Operating Environment | 150°F (65.6°C) |
| RoHS Compliant | Yes |
| Purchase Quantity | Multiples of 10 |
Upsite identifies the 10035 as its 1U, 19-inch black HotLok blanking panel with temperature strip.
How HotLok Blanking Panels Improve Rack Airflow
Unused rack openings allow air to move through areas where no IT equipment is installed.
This can allow hot exhaust air from the rear of the cabinet or hot aisle to migrate back toward server intakes at the front of the rack.
HotLok blanking panels help close these openings, supporting better separation between:
- Conditioned intake air
- Hot equipment exhaust
- Cold aisles
- Hot aisles
Reducing recirculation and bypass airflow can help improve rack-level cooling consistency and reduce hotspots.
Upsite positions the HotLok product family specifically around preventing hot exhaust air from circulating to the front of IT cabinets.
Integrated Temperature Strip
What distinguishes the HotLok 10035 from a standard blanking panel is the built-in temperature strip.
The liquid-crystal strip allows technicians to quickly see the approximate intake-air temperature at the rack without using a separate handheld thermometer.
This is useful for identifying:
- Potential hotspots
- Elevated server-inlet temperatures
- Cooling imbalance
- Changes in rack conditions
- Areas that may require additional airflow investigation
The temperature strip provides readings accurate to approximately ±1°C according to Upsite.
Understanding the Temperature Zones
The HotLok temperature indicator uses color-coded operating ranges to help technicians interpret conditions quickly.
Upsite groups the temperature ranges into:
- Blue — recommended operating range
- Yellow — allowable operating range
- Red — outside the allowable operating range and potentially indicating a hotspot or other temperature concern
The actual temperature is indicated by the liquid-crystal portion of the strip, while the surrounding color bands help technicians quickly assess whether conditions fall within recommended or allowable ranges.
This makes the 10035 useful not only for sealing unused rack space, but also as a simple visual monitoring tool during routine data center inspections.
Tool-Free Installation
The HotLok 10035 installs directly into compatible rack openings without screws, cage nuts, or separate mounting hardware.
To install:
- Position the panel in an unused 1U opening.
- Align it with the rack mounting area.
- Snap the panel securely into place.
- Confirm that the temperature strip remains visible from the front of the cabinet.
Integrated finger grips allow the panel to be removed when the rack space is needed for new IT equipment.
HotLok 10035 vs. HotLok 10031
Both products are 1U HotLok blanking panels designed for standard 19-inch racks. The primary difference is temperature monitoring.
| Feature | HotLok 10031 | HotLok 10035 |
|---|---|---|
| Rack Height | 1U | 1U |
| Width | 19″ | 19″ |
| Color | Black | Black |
| Tool-Free Installation | Yes | Yes |
| Rack Airflow Sealing | Yes | Yes |
| Integrated Temperature Strip | No | Yes |
| Best Use | Standard rack sealing | Rack sealing + visual temperature monitoring |
Choose the HotLok 10031 1U Blanking Panel when the primary goal is simply sealing unused rack space.
Choose the HotLok 10035 when you also want an integrated visual temperature indicator at the rack.
Need a 2U Version?
For larger unused rack openings, HotLok also offers the 10038 2U Blanking Panel with Temperature Strip.
The 2U version provides the same basic combination of airflow sealing and integrated temperature monitoring while covering twice the vertical rack space.
DCFT also carries a range of other Upsite Technologies airflow-management products, including HotLok blanking panels, temperature strips, pass-through panels, KoldLok grommets, and AisleLok products.
When Is the HotLok 10035 a Good Choice?
The HotLok 10035 is particularly useful for:
- Data centers with unused rack spaces
- High-density server cabinets
- Hot-aisle/cold-aisle environments
- Contained aisle deployments
- Facilities monitoring server inlet temperatures
- Racks that have experienced recurring hotspots
- Data centers performing routine airflow audits
- Facilities wanting both rack sealing and simple temperature visibility
Frequently Asked Questions
What is the HotLok 10035?
The HotLok 10035 is a 1U, 19-inch server rack blanking panel from Upsite Technologies with an integrated temperature strip for monitoring rack intake-air temperature.
What does the temperature strip show?
The strip provides a visual temperature reading and uses color-coded ranges to indicate whether conditions are within recommended, allowable, or potentially problematic temperature ranges.
Does the HotLok 10035 fit standard server racks?
Yes. It is designed for compatible 19-inch EIA-310-E rack openings.
Does the HotLok 10035 require tools to install?
No. It uses a tool-free snap-in design and requires no screws, cage nuts, or additional mounting hardware.
What is the difference between HotLok 10035 and 10031?
Both are 1U black blanking panels. The HotLok 10035 includes an integrated temperature strip, while the HotLok 10031 is a standard blanking panel without temperature monitoring.
How accurate is the temperature strip?
Upsite states that the temperature indication is accurate to approximately ±1°C.
How many HotLok 10035 panels are sold together?
The HotLok 10035 is sold in multiples of 10.
HotLok Rack Airflow Management
HotLok is Upsite Technologies’ rack airflow-management product family, designed to help reduce exhaust-air recirculation and bypass airflow within data center cabinets.
The HotLok line includes:
- 1U and 2U blanking panels
- Temperature-strip blanking panels
- Pass-through blanking panels
- Full-rack blanking solutions
- Temperature-monitoring accessories
- Additional rack airflow-management products
The HotLok 10035 combines two of those functions—rack sealing and temperature monitoring—in one 1U panel.





