Send a part number, a photo, or a whole BOM — we supply it and stand behind it. Worldwide shipping to 80+ countries.

3G Electric
STI FS401 Firestop Passthrough for Cables, Round, 4 in H x 12 in L x 8.25 in W - Firestop Passthroughs for Cables
STIFirestop Passthroughs for Cables

STI FS401 Firestop Passthrough for Cables, Round, 4 in H x 12 in L x 8.25 in W

The STI Sleeve Kit: Round is a firestop passthrough for cables, designed for cable applications. This kit includes two mounting plates and measures 4 inches in overall height, 12 inches in overall length, and 8.25…

SKU 3G-OTH-553347

Also listed as: FS 401 · FS-401

Brand
STI
Item
FS401 Firestop Passthrough for Cables, Round, 4 in H x 12 in L x 8.25 in W
Part Number
FS401
Category
Firestop Passthroughs for Cables
Available to Order
Trade pricing by quote — replies within 24h
Qty
WhatsApp an engineerMessage via Telegram
No account needed — your quote request goes straight to our engineers. A free account lets you track quotes and re-order faster.
Worldwide Shipping
Air & sea freight
Datasheet on Request
Technical specs
1-Day Quote
Replies within 24h

Local availability & support — Singapore

Local office
20 Woodlands Link #09-05, Singapore 738733
Phone
+65 8878 8355
Delivery
Same-day or next-business-day delivery within Singapore for in-stock items; 7–14 days for factory-order parts from Europe.
Payment
Invoicing in SGD. PayNow, bank transfer, and corporate PO accepted.
Ships to
Singapore

Technical Specifications

STI
Manufacturer Part Number
FS401
Type
Cable
Overall Lg
12 in
Overall Ht
4 in
Overall Wd
8.25 in
Shape Broad
Round
Mounting Plates Included
Two Plates

Technical Documents

No technical documents available for this product.
Request documentation
Not sure this is the right part? Get a recommendation.

Need installation or engineering help?

Installation, commissioning, maintenance plans, system design, and bundled product + service quotes — one team handles the full scope.
Talk to an engineer

Ask a question

STI Products
3G Electric (S) Pte. Ltd. — Singapore

Product Description

The STI Sleeve Kit: Round is a firestop passthrough for cables, designed for cable applications. This kit includes two mounting plates and measures 4 inches in overall height, 12 inches in overall length, and 8.25 inches in overall width (MPN FS401).

Frequently Asked Questions

What is the STI Sleeve Kit FS401 used for?

The STI Sleeve Kit FS401 is a firestop passthrough for cables, designed to seal round cable penetrations in fire-rated walls and floors. It includes two mounting plates and measures 4 in overall height, 12 in overall length, and 8.25 in overall width.

What are the specifications of the STI Sleeve Kit FS401?

The STI Sleeve Kit FS401 is a round firestop passthrough for cables. It has an overall height of 4 in, overall length of 12 in, and overall width of 8.25 in. The kit includes two mounting plates and is manufactured by STI under MPN FS401.

Where to buy the STI Sleeve Kit FS401 worldwide?

3G Electric supplies the STI Sleeve Kit FS401 to customers worldwide. As a global industrial solutions provider, we handle full logistics, customs clearance, and delivery for this firestop passthrough, ensuring it reaches your facility regardless of location.

How to install the STI Sleeve Kit FS401?

Install the STI Sleeve Kit FS401 by positioning the round sleeve through a cored hole in the fire-rated barrier. Secure the two included mounting plates on each side, then route cables through the sleeve. Follow local firestop installation standards and seal gaps with approved caulk.

Not sure this is the right part? Photo-identify it

STI Products

3G Electric supplies STI firestop passthroughs for cables. We supply genuine products with in-stock availability on common SKUs, technical documentation, commissioning support, and warranty service — worldwide.

You might also need

Burners & Combustion Pumps & Compressors Spare Parts All Products

More from STI

View all STI parts
Square firestop passthrough for cables, 6.5 in overall height and 6.25 in overall length. Designed to seal cable openings in fire-rated walls or floors, limiting smoke and sound transmission while preserving the fire-resistance rating of the barrier. No mounting plates included
STI
Square firestop passthrough for cables, 6.5 in overall height and 6.25 in overall length. Designed to seal cable openings in fire-rated walls or floors, limiting smoke and sound transmission while preserving the fire-resistance rating of the barrier. No mounting plates included

Customer reviews

No reviews yet — be the first

Questions & answers

No questions yet — ask us the first