Product Description
NSL-401AT/10 is a 4" Non-IC rated Air-Tight new construction housing from Nora Lighting, built for energy efficiency and reliable performance. Designed for ceiling applications where insulation is kept at least 3” away, this housing supports MR16 GU10 lamps up to 50 watts and features quick-connect wiring for simplified installation.
Brand: Nora Lighting
Model: NSL-401AT/10
Housing Type: 4" Non-IC Air-Tight New Construction
Lamp Base: GU10
Maximum Wattage: 50W
Input Voltage: 120V
Ceiling Thickness Compatibility: 5/8" to 1-3/8"
Free shipping on orders over $250
Benefits
- Air-tight construction improves energy efficiency by reducing airflow into ceiling plenum
- Safe thermal clearance: requires only 3" clearance from insulation
- Quick-connect system speeds up wiring during installation
- Compatible with Nora 4” MR16 trims for seamless integration
Key Features
- Quick Connect: UL-approved pre-wired connectors for power, common, and ground
- Steel Frame: 0.040 steel construction with integral bar hanger brackets
- Junction Box: 25 in³ galvanized steel with 1/2” knockouts and Romex® pryouts
- Thermal Protector: UL-rated thermal protection up to 90°C
- Bar Hangers: Extendable 13-3/4" to 24-1/2", with T-bar slots and alignment feet
Technical Specifications
| Input Voltage | 120V |
|---|---|
| Lamp Type | MR16 (not included) |
| Base Type | GU10 |
| Maximum Wattage | 50W |
Physical Specifications
| Housing Construction | 0.035 white baked enamel steel |
|---|---|
| Ceiling Cut-Out | 4-3/8" |
| Ceiling Thickness | 5/8" to 1-3/8" |
| Minimum Clearance | 3" from insulation; 1/2" from structural components |
| Air-Tight Rating | <2CFM per ASTM-283 |
Compliance & Listings
| cULus listed for Damp Location & Feed Through |
| Meets ASTM-283 Air-Tight Requirements |
| Approved in Washington State |
Application Examples
- New construction ceiling projects without direct insulation contact
- Residential kitchens, hallways, and accent lighting zones
- Commercial downlighting with 4” MR16 GU10 fixtures
Installation Tips
- Ensure 3" clearance from insulation and 1/2" from building components
- Use quick-connects for a fast and code-compliant setup
- Align bar hangers using integrated T-bar slot and feet
- Secure housing in joist using included captive nails
Frequently Asked Questions
Q: What type of lamp does this housing support?
A: The NSL-401AT/10 supports MR16 GU10 base lamps up to 50W (lamp not included).
Q: Is this fixture suitable for insulated ceilings?
A: No, this Non-IC housing requires 3" clearance from insulation.
Q: Can it be installed in a damp area?
A: Yes, it is cULus listed for damp locations and feed-through wiring.
Q: What is the air-tight rating?
A: It meets ASTM-283 with <2CFM air leakage.
Q: Does it come with thermal protection?
A: Yes, a UL-listed thermal protector rated at 90°C is included.
Q: What ceiling cut-out size is required?
A: The cut-out diameter needed is 4-3/8".
