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STI Firestop SpecSeal® Composite Sheets
Lightweight, Thin, and Easy to Work With
STI SpecSeal® Composite Sheet
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What's special about these firestop sheets?
Composite sheets have long been a favorite for firestopping large openings where a clean, neat finish is required. In addition, these sheets provide an excellent exterior surface. You may use the composite sheets with other STI Firestop products to seal penetrations through fire-resistance rated walls and floors for metallic and non-metallic pipes, insulated pipes, cable trays, cables, conduits, or blank openings. |
These products protect openings of any shape in common construction work against fire, smoke, and combustion by-products. Another benefit to this type of firestop is that no maintenance is needed as there might be with other choices; however, it is recommended that any new openings or jobs be inspected to ensure that all remained sealed.
- Durability built in: made of an intumescent layer bonded to a galvanized steel sheet, reinforced with steel wire mesh and covered with aluminum foil
- Easy to cut using standard sheet metal cutting tools to size your composite sheets to specs
- Can be used with other SpecSeal® or EZ Path products by STI
- UL Classified
- Tested to ASTM E814 (ANSI/UL 1479) for up to 2 hours
- Specifically created for use in medium- to large-sized openings
- Excellent for use in both floors and walls because it is lightweight enough for handing and hanging
- Paintable for blending with current décor
Applications:
- Seal penetrations through fire-rated walls and floors
- Metallic and non-metallic pipes
- Insulated pipes
- Cable trays
- Cables
- Conduits
- Blank openings
- Suitable for clean room/area environment
- MSDS (PDF)
| Item | Composite Sheet |
|---|---|
| Material | 31 AWG, Steel Sheet, Steel Wire Mesh, and Aluminum |
| Mounting | Floor or Wire |
| Fire Rating | 2 hours |
| ASTM E814 (ANSI/UL 1479) | Up to 4 hour ratings for penetrations in walls and floors |
| ASTM E814 Electrical Circuit | Protection Systems for Cable Trays 1 hour UL Classified Systems |
| Surface Burning Characteristics | Flame Speed 5 Smoke Development 50 |
| Nominal Thickness | 0.1 inch (2.5mm) |
| Nominal Weight | 1.4 lb/ft² (6.9 kg/m²) Intumescent |
| Expansion Begins | 350° F (177° C) |
| Volume Expansion | 15 X (typical free expansion) |
| Max. In-Service Temperature | 130° F (54° C) |
| Radiation Exposure | Unaffected |
| Shelf Life | No Limit |
| VOC Content | n/a |
| STC Rating | 55 |
| PART # | DESCRIPTION | DIMENSIONS | WEIGHT | PRICE |
| STI-CS1628 | SpecSeal® Composite Sheet 16" x 28" | 16" x 28" x 0.1" (41cm x 71cm x 2.5 mm) |
4.4 lbs (2 kg) |
|
| STI-CS2436 | SpecSeal® Composite Sheet 24" x 36" | 24" x 36" x 0.1" (61cm x 92cm x 2.5mm) |
8.4 lbs (3.8 kg) |
|
| STI-CS3636 | SpecSeal® Composite Sheet 36" x 36" | 36" x 36" x 0.1" (92cm x 92cm x 2.5mm) |
12.6 lbs (5.7 kg) |
|
| STI-CS3641 | SpecSeal® Composite Sheet 36" x 41" | 36" x 41" x 0.1" (92cm x 104cm x 2.5mm) |
14.4 lbs (6.5 kg) |
|
| STI-CS2852 | SpecSeal® Composite Sheet 28" x 52" | 28" x 52" x 0.1" (71cm x 132cm x 2.5mm) |
14.2 lbs (6.4 kg) |
MANUALS & USER GUIDES -
- MSDS (PDF)
- Product Data Sheet (PDF)
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