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National Guard Products 137NA Neoprene Smoke-Rated Meeting-Edge Astragal Set – Anodized Aluminum
National Guard Products (NGP) Model 137NA is a two-piece neoprene smoke-rated meeting-edge astragal set finished in Anodized Aluminum with a black neoprene seal insert. Engineered for pairs of fire-labeled doors, this set installs along the meeting edges — one piece per door leaf — delivering certified smoke, draft, and fire control performance on hollow metal doors rated up to 3 hours and wood doors rated up to 90 minutes. Sold as a two-piece set in 84-inch or 96-inch piece heights, the 137NA is a made-to-order product with a lead time of 10–15 business days.
137NA Neoprene Smoke-Rated Astragal Set – Key Features
- Aluminum Alloy Construction: Extruded from Aluminum Alloy 6063, T5 Temper for a strong, lightweight carrier that accepts an Anodized Aluminum finish for lasting corrosion resistance.
- High-Performance Neoprene Seal: The black neoprene seal is a Synthetic EPDM Rubber in a Polypropylene Thermoplastic Matrix, providing very good abrasion resistance, tensile strength, and shape memory for consistent sealing over the life of the door pair.
- Wide Temperature Range: Rated from -81°F to 275°F, making the 137NA suitable for demanding environments including exterior-facing pairs and high-temperature exposures.
- Flame- and Moisture-Resistant Seal: The neoprene compound is both flame-resistant and moisture-resistant, and offers good resistance to ozone, sunlight, and aging — critical qualities for long-term smoke and draft control.
- UL-Certified Fire and Smoke Performance: Certified by UL to ANSI/UL10B and CAN/ULC-S104 (standard and positive pressure), and to ANSI/UL10C (positive pressure) and ANSI/UL1784 Category 'H' for smoke and draft control. Complies with IBC, NFPA 80, NFPA 105, and NFPA 252.
- Slotted Screw Holes for Easy Adjustment: Screw holes are slotted so the astragal can be precisely positioned at the meeting edge for a tight, consistent seal.
- Stainless Steel Fasteners Furnished: #6 × 3/4 inch Stainless Steel SMS screws are included, eliminating the need to source separate fasteners.
- Two-Piece Meeting-Edge Set: Ordering one set provides two pieces — one for each door leaf of a pair — ensuring a matched, code-compliant installation.
- Made to Order – Available in 84" and 96" Heights: Select the piece height that matches your door pair; lead time is 10–15 business days.
Technical Details
| Manufacturer | National Guard Products (NGP) |
| Model Number | 137NA |
| Product Type | Two-Piece Meeting-Edge Smoke-Rated Astragal Set |
| Finish | Anodized Aluminum |
| Seal Material & Color | Neoprene (Synthetic EPDM Rubber in Polypropylene Thermoplastic Matrix) – Black |
| Carrier Material | Aluminum Alloy 6063, T5 Temper |
| Section Profile | 7/8" × 5/16" |
| Available Piece Heights | 84 inch and 96 inch |
| Pieces per Set | 2 (one per door leaf) |
| Temperature Range | -81°F to 275°F |
| Fasteners Furnished | #6 × 3/4" Stainless Steel SMS |
| Screw Holes | Slotted for field adjustment |
| UL Certifications | Certified by UL to ANSI/UL10B, ANSI/UL10C, CAN/ULC-S104, and ANSI/UL1784 Category 'H' |
| Applicable Standards | IBC, NFPA 80, NFPA 105, NFPA 252 |
| Fire Door Ratings – Hollow Metal | Up to 3 hours |
| Fire Door Ratings – Wood | Up to 90 minutes |
| Positive Pressure Certified | Yes – ANSI/UL10C |
| Smoke & Draft Control | Yes – UL Category 'H', ANSI/UL1784 |
| Lead Time | Made to order – 10 to 15 business days |
Pro Tip: The 137NA installs at the meeting edge of a pair of doors — one piece applied to each door leaf. The slotted screw holes allow lateral adjustment so the neoprene seal compresses evenly when the doors close, maintaining the required smoke and fire seal. Per IBC, NFPA 80, NFPA 105, and NFPA 252, the gap at the meeting edge between fire-labeled doors must not exceed 1/8 inch. Important: fire-rated astragal seals such as the 137NA cannot replace any astragal required on the door by the door manufacturer to maintain its fire label — always verify the door manufacturer's requirements before ordering.
| Length | 84 Inch or 96 Inch |
| Brand | National Guard Products |
| Housing Finish | Aluminum |
| Smoke Rated | Smoke Rated |
| Weatherstripping Type | Astragal |
| Housing Size | 7/8" x 5/16" |
| Insert Color | Black |
| Fasteners | #6 x 3/4" Stainless Steel SMS |
| Set Type | Two-piece meeting-edge set |
| Fire Rated | Fire Rated |
| Insert Material | Neoprene |
| Mounting Type | Screw Applied - Exp Screw, Surface Mounted |
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