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Pemko 325XGSSN Extreme Gap Door Bottom Sweep — Stainless Steel with Neoprene Insert
The Pemko 325XGSSN is a heavy-duty door bottom sweep engineered specifically for excessive-gap commercial fire door openings where door and frame clearances exceed the limits defined by NFPA 80. Offered as part of Pemko's Extreme Gap product line, this sweep features a surface-mounted, screw-applied U-channel constructed from stainless steel, fitted with a replaceable neoprene seal insert that compresses against the threshold or floor to block air, light, sound, smoke, and drafts even in oversized clearance conditions. Independently fire-tested by Intertek (Warnock Hersey) to Intertek IS47 as an excessive-gap solution, the 325XGSSN is listed for use with rated door assemblies up to 1-1/2 hours.
Institutional Grade Features & Benefits
- Extreme Gap Performance: Specifically designed for door and frame clearances that exceed NFPA 80 standard tolerances, making it the correct solution where standard door sweeps fall short on oversized gaps.
- Approved for NFPA 80 fire-rated openings
- NFPA 80 Compliant Application: Engineered to restore code-compliant door assembly performance on fire-rated openings where clearances would otherwise fail NFPA 80 requirements.
- Stainless Steel U-Channel: Corrosion-resistant stainless steel body provides long-term durability in demanding commercial and institutional environments, including high-traffic, high-humidity, and exterior-facing applications.
- Replaceable Neoprene Insert: The neoprene seal is field-replaceable, allowing ongoing maintenance without removing the full sweep assembly — reducing downtime and total cost of ownership.
- Surface / Screw-Mounted Installation: The U-channel attaches directly to the face of the door bottom, eliminating the need for routing or mortising and simplifying installation on both new and retrofit fire door projects.
- Commercial Fire Door Ready: Suitable for use on commercial fire door assemblies requiring a tested and listed excessive-gap bottom seal to meet inspection and Authority Having Jurisdiction (AHJ) requirements.
Technical Details
| Feature | Details |
|---|---|
| Brand | Pemko |
| Model / Part Number | 325XGSSN |
| Part Type | Door Bottom Sweep — Extreme Gap |
| Body Material | Stainless Steel |
| Seal Insert Material | Neoprene (Replaceable) |
| Mounting Method | Surface / Screw-Mounted U-Channel |
| Fire Rating | Up to 1-1/2 Hours (Rated Door Assemblies) |
| Fire Test Standard | Intertek IS47 (Excessive-Gap Solution) |
| Listing Agency | Intertek / Warnock Hersey |
| Code Reference | NFPA 80 — Excessive Gap Application |
| Application | Commercial Fire Door Openings with Excessive Clearance |
Documentation
| Length | 36 Inch or 48 Inch |
| Brand | Pemko |
| Bottom Weatherseal Type | Door Bottom |
| Housing Finish | Stainless Steel |
| Weatherstripping Type | Perimeter Gasketing |
| Fire Rated | Fire Rated |
| Insert Material | Neoprene |
| Mounting Type | Surface Mounted |
| Sweeps, Door Bottom or Rain Drip | Door Bottom |
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