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NGP 203NA Heavy Duty Neoprene Sill Sweep – Aluminum
The National Guard Products 203NA is a heavy duty neoprene sill sweep designed for commercial door applications where reliable under-door sealing is essential. Featuring an aluminum retainer with a durable neoprene wiper, this sill sweep creates an effective barrier against air infiltration, water infiltration, dust, light, and drafts at the door bottom — making it a practical choice for commercial entrances, office buildings, schools, healthcare facilities, and institutional openings.
The 203NA mounts directly to the face of the door bottom (surface-applied) and is engineered to maintain consistent contact with the sill or threshold surface. The neoprene seal element is chosen for its resistance to weathering, compression set, and temperature extremes — critical qualities for exterior and high-traffic interior applications.
Key Benefits
- Heavy duty construction: Aluminum retainer provides long-term structural integrity under frequent door use
- Neoprene seal element: Resistant to weathering, UV exposure, and temperature cycling — maintains effective compression seal over time
- Surface-mounted installation: Attaches to the door face bottom; no mortising or special door prep required
- Air and water infiltration control: Reduces energy loss and helps prevent moisture, dust, and drafts from entering under the door
- Commercial-grade durability: Suitable for high-traffic commercial openings including offices, schools, healthcare, and institutional facilities
- Aluminum finish: Coordinates with standard commercial aluminum door and frame finishes
Typical Applications
- Commercial exterior entry doors
- Office and institutional interior corridor doors
- School and healthcare facility doors
- Any opening requiring reliable under-door weathersealing and draft control
Technical Details
| Feature | Details |
|---|---|
| Manufacturer | National Guard Products (NGP) |
| Model Number | 203NA |
| Product Type | Sill Sweep / Door Bottom Sweep |
| Seal Material | Neoprene |
| Retainer Material | Aluminum |
| Duty Rating | Heavy Duty |
| Mounting Type | Surface Applied (Door Face Bottom) |
| Category | Sweeps / Door Bottoms / Weatherseal |
Looking for comparable alternatives from additional preferred lines? Pemko, Hager, and Reese also offer heavy duty neoprene sill sweeps and door bottoms in aluminum — contact us for a quote on comparable options.
Approvals:
UL 10C Classified on wood doors up to 90 min.
UL 10C Classified on metal doors up to 3 hr.
UL 10B Classified on wood doors up to 90 min.
UL 10B Classified on metal doors up to 3 hr.
Smoke and Draft Control-UL Classified Category H
Air Infiltration Tested to ASTM E283
ANSI/BHMA Certified to ANSI/BHMA A156.22-2012
| Length | 36 Inch or 48 Inch |
| Brand | National Guard Products |
| Bottom Weatherseal Type | Sill Sweep |
| Housing Length | 1-1/16" |
| Insert Material | Neoprene |
| Material Length | 2" |
| Housing Finish | Aluminum |
| Fire Rated | Fire Rated |
| Smoke Rated | Smoke Rated |
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