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Pemko STC4131CPK Acoustic Rated and Fire Rated, Surface or Semi Mortised Automatic Door Bottom, Aluminum Finish, PemkoPrene Insert, 3/4" Max Drop
Pemko STC4131CPK Fire-Rated and Sound Rated, Surface or Semi Mortised Automatic Door Bottom, Aluminum Finish
Lead Time:
36" Length - 0-2 Days
42" or 48" Length - 2-3 Weeks
Pemko STC4131CPK Fire-Rated Acoustic Automatic Door Bottom | PemkoPrene Insert
The Pemko STC4131CPK Acoustic Automatic Door Bottom is a high-performance sealing solution specifically engineered for environments where sound control is the top priority. As part of the elite STC Series, this unit has undergone independent testing to provide "sealed-in-place" acoustic performance, making it the industry standard for recording studios, medical facilities, and educational institutions.
Designed for ultimate versatility, the STC4131CPK can be surface-applied or semi-mortised, allowing for a professional-grade retrofit or a sleek, low-profile new installation. The heavy-duty aluminum casing houses a precision-engineered drop-bar that lowers only when the door is closed, effectively blocking noise, drafts, and smoke without interfering with door operation.
Key Features & Performance
- Superior Sound Control: Meets ANSI Standard S12.60-2002 for acoustical performance in schools and helps projects earn LEED IEQ School Specific Credits.
- Acoustic "Sealed-In-Place" Performance: Engineered to provide a laboratory-level seal that dramatically reduces decibel transfer through the gap under the door.
- PemkoPrene™ Synthetic Rubber Seal: Features a high-durability insert with the flexibility of natural rubber and outstanding resistance to cleaning fluids and disinfectants.
- Non-Handed for Easy Installation: No disassembly is required to change handing; simply flip the unit for fast, error-free mounting on-site.
- Positive Seal Mechanism: The jamb-contacting plunger triggers a hinge-side actuation, preventing "seal skidding" and protecting expensive flooring from wear.
- Field Trimmable: Provided at NET length and can be trimmed by up to 2" in the field for a custom, airtight fit.
Technical Details & Certifications
- Base Material: Architectural Aluminum with a Clear Anodized finish.
- Dimensions: 19/32" Width x 1 27/32" Overall Height.
- Fasteners: Includes thru bolts and #8 x 1 1/4" THSMS for a secure, industrial mount.
- ASTM E 90-2009: Independently tested for high-level sound transmission loss.
- UL 10C & UL 1784: Fire-rated for positive pressure and smoke-inspected for life-safety compliance.
- GREENGUARD Gold Certified: Ensures low chemical emissions for superior indoor air quality.
- Sustainability: Includes an Environmental Product Declaration (EPD) for green building transparency.
- Standards: Meets ANSI/BHMA A156.22 and ASTM E-283-04 for air leakage and gasketing.
| Length | 36 Inch or 42 Inch or 48 Inch |
| Brand | Pemko |
| Insert Material | PemkoPrene |
| Fire Rated | Fire Rated |
| Mounting Type | Surface Mounted |
| Bottom Weatherseal Type | Automatic Door Bottom |
| Housing Finish | Aluminum |
| Sweeps, Door Bottom or Rain Drip | Door Bottom |
| Sound Rated | Sound Rated |
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