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STI Firestop SpecSeal® Composite Sheets

Name: STI Firestop SpecSeal® Composite Sheets
SKU: STI-CS1628

Lightweight, Thin, and Easy to Work With

STI-CS1628

What's special about these firestop sheets?

Panels are intumescent up to 15 times their original size for excellent firestopping of large or small openings.
Once activated, these sheets form a dense insulated char, which reduces the transfer of heat and smoke.
50% lighter in weight and approximately 1/2 the thickness of standard composite sheet products for easy installation and handling.
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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.

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)	Qty: Manufacturer Direct
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)	Qty: Manufacturer Direct
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)	Qty: Manufacturer Direct
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)	Qty: Manufacturer Direct

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

SpecSeal Composite Sheet 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