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Ships within 48 hours · Estimated delivery Sep 6 - Sep 11
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Description
STI FS400 4 Inch Insoluble Firestop Sleeve KitSTI FS400 4 Inch Insoluble Firestop Sleeve Kit Red SpecSeal Ready SKU: 238424 Description STI SpecSeal Ready Firestop sleeve kit is designed for new cabling penetrations where the sleeves are required. This sleeve has preformed steel construction with rolled edges, steel escutcheon plates with intumescent gaskets and a dosage of our SpecSeal SSP firestop putty. Rolled edges eliminate the need for bushings and the escutcheon plates and gaskets take the
STI FS400 4-Inch Insoluble Firestop Sleeve Kit Red SpecSeal® Ready®
SKU: 238424
Description
STI SpecSeal® Ready® Firestop sleeve kit is designed for new cabling penetrations where the sleeves are required. This sleeve has preformed steel construction with rolled-edges, steel escutcheon plates with intumescent gaskets and a dosage of our SpecSeal® SSP firestop putty. Rolled-edges eliminate the need for bushings and the escutcheon plates and gaskets take the place of steel strut and strap supports. This 4-Inch firestop sleeve is made for the assemblies up to 10-Inch thick. Firestop sleeve kit is UL listed and Code compliant.
- Economical
- Ready to install
- Locks into place
- Factory supplied intumescent firestop gasket
- Firestop putty provided with kit, which is sufficient to seal ends to 1-Inch deep
Specifications
| List UOM Qty |
1
|
Order UOM |
ea
|
|---|---|---|---|
| Form |
Solid
|
Temperature Rating |
-10 to 120 deg F
|
| UNSPSC |
46191507
|
GTIN |
00730573204009
|
| Type |
Insoluble
|
Standards |
UL Listed, Code Compliant
|
| Made In America |
Yes
|
Size |
4 Inch
|
| Material |
0.059 Inch Steel
|
Color |
Red
|
| Manufacturer Part Number |
FS400
|
RoHS Flag |
Yes
|
| Country Of Origin |
United States of America
|
Brand Name |
STI
|
| Sub Brand |
SpecSeal® Ready®
|
Manufacturer Name |
STI
|
| Item Name |
Firestop Sleeve Kit
|
UPC |
73057320400
|
| MSDS | Link | Is Oversized |
0
|
Shipping Notes
- Free Standard Shipping on $100+ Orders to the USA.
- Except Preorder products are shipped in 48 hours.
- Delivery to the USA:
- Standard Shipping : 3-10 business days
- If time is of the essence, please consider selecting expedited delivery for faster service.
Exchange/Return Notes
- We offer a 30-day return/exchange service after receiving.
- Final sale items are not eligible for returns or exchanges.
- To process your return/exchange, please contact us at [email protected]
- Please click here for more details>>> Return & Exchange Policy
4.0 ★★★★★
Based on 9 reviews
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Product Reviews
★★★★★ 5
Bought second one
Color: Navy, Size: Medium
I bought the black T-shirt about a month ago and really liked the quality the fabric is soft, the fit is great, and it holds up well after washing. So I decided to get the same one in dark blue.Very satisfied with the purchase
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Reviewed in the United States on December 9, 2025
★★★★★ 5
Men’s mock golf shirt
Color: Lake Green, White, Black, Size: XX-Large
Fit & quality very good.
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Reviewed in the United States on June 4, 2026
★★★★★ 5
Nice Fit
Color: Black, White, Light Gray, Size: 3X-Large
I picked this up looking for something simple but clean, and it delivered. The fit is comfortable, the material feels solid, and it looks good without needing much effort. It’s one of those pieces you can throw on and still look put together.
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Reviewed in the United States on March 29, 2026
★★★★★ 4
Good value, soft and comfortable
Color: Black, Army Green, Light Gray, Size: 4X-Large, Color: Black, Army Green, Light Gray, Size: 4X-Large
Initial thoughts are very positive with this 3 pack shirt set. The green is similar to an OD military green and the black and gray are standard color shades. Material is soft and sizes are true to size. The mock turtleneck isn’t too tight but may still be a little annoying to some people. I do question the amount of spandex in these shirts. Tag says 5% but these shirts are extremely stretchy and feels like a higher spandex content. It’s also a little tough to figure out which way is the front of the shirt. Visually rhe front does have a lower collar line than the back but would still be nice to have a brand tag printed in the back of the shirt for quicker identification.
Overall for roughly $12 a shirt these are a good choice for everyday wear. I will update rating if these shirts fail to meet expectations after further use.
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Reviewed in the United States on April 8, 2025
★★★★★ 5
👍🏻
Color: Black, Army Green, Light Gray, Size: 5X-Large
Weirdly thick material, I wasn’t a fan but it’s a good sleep shirt
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Reviewed in the United States on May 28, 2026