What is the Hilti Firestop Block CFS-BL used for?

The Hilti Firestop Block CFS-BL is designed to provide effective fire resistance in construction spaces where fire-rated assemblies are required. This block is typically used to seal openings and penetrations in walls and floors, helping to prevent the spread of smoke and fire between areas. Its performance is crucial in maintaining building safety standards and protecting life and property in the event of a fire.

How does the Hilti Firestop Block CFS-BL work?

The CFS-BL utilizes specialized materials that expand when exposed to heat, creating a tight seal that obstructs fire and smoke. This means that during a fire, the block reacts to heat by expanding, filling the gaps around pipes, cables, and other penetrations. Not only does it help maintain the integrity of fire-rated barriers, but it also plays a vital role in overall fire safety within buildings.

Where can the Hilti Firestop Block CFS-BL be installed?

This firestop block can be installed in various locations throughout a building, particularly in areas where utilities penetrate fire-rated walls and floors. Common applications include mechanical rooms, electrical rooms, and corridors where building services need to pass through fire-rated barriers, ensuring that these critical areas remain protected from fire hazards.

What sizes are available for the Hilti Firestop Block CFS-BL?

The Hilti Firestop Block CFS-BL is available in multiple sizes, specifically designed to accommodate different penetration dimensions. This variability allows for flexibility in installation, ensuring that builders can choose the right size block for their specific applications. Customizing the size ensures optimal performance and adherence to the recommended installation guidelines for effective fire protection.

Is the Hilti Firestop Block CFS-BL suitable for outdoor use?

The CFS-BL is primarily designed for indoor use where controlled environments meet fire safety regulations. Its materials are tailored for structural integrity and fire resistance, but exposure to outdoor elements may compromise its effectiveness. It's advisable to consult with a building safety professional regarding suitable products for outdoor applications to ensure compliance with safety standards in all scenarios.

How do you install the Hilti Firestop Block CFS-BL?

Installation of the Hilti Firestop Block CFS-BL requires proper surface preparation, including cleaning the area around the penetration. The block can be fitted directly into the opening, ensuring a snug fit. Additionally, it's essential to follow the manufacturer's detailed guidelines to guarantee that the block performs effectively, maximizing fire protection and safety for structural elements.

Can the Hilti Firestop Block CFS-BL be painted or modified?

Modifying the Hilti Firestop Block CFS-BL, including painting, is generally not recommended as it may impact its fire-resistance capabilities. These blocks are constructed with materials that are specifically designed for fire performance, and altering them can compromise their integrity. To maintain their effectiveness, users should adhere to manufacturer guidelines and consider other aesthetic solutions for surrounding areas.

What are the benefits of using the Hilti Firestop Block CFS-BL?

The benefits of using the Hilti Firestop Block CFS-BL include enhanced fire safety, compliance with building codes, and robust performance in high-stakes environments. As part of a fire protection system, these blocks facilitate the safe management of fire hazards, providing peace of mind for builders and occupants. Additionally, their reliable design makes them essential for maintaining the structural integrity of fire-rated walls.

Can I use the Hilti Firestop Block CFS-BL for all types of cables and pipes?

The Hilti Firestop Block CFS-BL is versatile and can be used for various types of cables, pipes, and other utilities in multiple building structures. However, it's vital to consult the product specifications to ensure compatibility with your specific installation needs. Proper applications include electrical conduits, HVAC ducts, and plumbing where fire resistance is required to maintain safety and compliance.

Where can I buy the Hilti Firestop Block CFS-BL in Botswana?

You can purchase the Hilti Firestop Block CFS-BL from Ubuy in Botswana. Ubuy offers a convenient platform with a range of products, including the Hilti Firestop solutions, ensuring that you can find what you need for your fire safety requirements directly online.

How to Shop Hilti Firestop Block CFS-BL Online From Ubuy?

It’s easy to shop Hilti Firestop Block CFS-BL online from Ubuy. You just have to search for the product, choose your shipping method while checking out and get it delivered to your location.

Is Hilti Firestop Block CFS-BL Available to Shop Online in Botswana?

Yes, at Ubuy Botswana this product is available for you to shop at a reasonable price. The Hilti Firestop Block CFS-BL is not available locally but you can trust us with our express shipping services.

How Long Does It Take to Get Product After Placing the Order?

The delivery time of your ordered product varies as per what you've ordered and the shipping method that you've chosen. The estimated delivery time is mentioned during the checkout process, so be carefree while shopping.

HILTI

Protect electrical outlet and switch boxes from the passage of flames, toxic gases, smoke and temperature with HiltiFirestop Block

HILTI

Item #: 10629746

Hilti Firestop Block CFS-BL

82% of respondents would recommend this to a friend

Item #: 10629746

BWP 993

Price Details

Excluding Shipping & Custom charges ( Shipping and custom charges will be calculated on checkout )

^{*All items will import from US}

Availability : In stock

Imported from USA store

QTY:

Only 5 items left in stock.

Order now and get it around Monday, November 02

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Protect electrical outlet and switch boxes from the passage of flames, toxic gases, smoke and temperature with HiltiFirestop Block

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What Stands Out

High Performance

Offers superior fire resistance, effectively sealing penetrations and preventing fire spread, ensuring compliance with stringent safety regulations.

Easy Installation

Designed for straightforward application, reducing labor time and costs, making it ideal for contractors and construction professionals.

Durable Material

Crafted from high-quality materials that withstand extreme conditions, ensuring long-lasting fire protection without compromising structural integrity.

Product Details

Thread Size	1/2 inch
Exterior Finish	Gray coating or material
Manufacturer Grade	Grade CFS
Screw Head Style	Hex
Color	Red
Fastener Type	Firestop Bolt
Thread Type	Unf
Thread Style	Unthreaded
Item Hardness	Grade 10.9
Head Type	Hex
Thread Class	3A
Compatible Groove Diameter	5 inches
Drive System	Firestop Bolt
Grade Rating	Ultimate
Set Screw Thread Type	Unified National Fine (UNF)
Material Type	Cementitious Material
Metal Type	Stainless Steel
Finish Types	Professional Grade
Size Name	1/2 inch
Number of Pieces	1
Fastener Size	1/2 inch
Thread Coverage	Unthreaded
Item Dimensions	5.38 x 7.88 x 2 inches (13.7 x 20 x 5.1 cm)
Item Weight	12.48 ounces (353.81 grams)
Brand	HILTI
Number of Packs	1
Set Name	Single
Unit Count	1 Count
Manufacturer	Hilti
Number Of Items	1
Model	CFS-BL
Part Number	CFS-BL
Material	Cementitious Material
Head Style	Hex

Who Should Buy?

Construction Professionals
Ideal for contractors who prioritize effective fire barriers during the construction of commercial buildings and infrastructure.
Fire Safety Inspectors
Recommended for inspectors needing reliable firestop solutions to enhance safety compliance in various structures.
Facility Managers
Suitable for facility managers requiring dependable fire protection systems for ongoing building maintenance and safety upgrades.

Residential Homeowners
May not be suitable for homeowners looking for simple and less costly fire protection solutions within their homes.

Product Description

About This Item

Introducing the Hilti Firestop Block CFS-BL for Unmatched Building Safety Ensure the utmost safety in your commercial and residential applications with the Hilti Firestop Block CFS-BL. Designed to protect electrical outlet and switch boxes from flames, toxic gases, smoke, and extreme temperatures, this firestop block is an essential addition to any construction project. Constructed from moldable firestop putty, the Hilti Firestop Block CFS-BL is engineered with precision to provide superior fire protection. With its advanced technology, this firestop block acts as a barrier, preventing the passage of fire and smoke, thus minimizing the potential for damage and danger. As a trusted name in the industry, Hilti is renowned for its innovative firestop solutions.

The CFS-BL firestop block is no exception. With its exceptional strength and durability, this versatile block offers reliable protection for commercial buildings, industrial applications, and all construction projects. Incorporating Hilti firestop materials into your building plan ensures compliance with safety regulations and delivers peace of mind. By utilizing the CFS-BL firestop block, you can safeguard your property, assets, and most importantly, lives. Don't compromise on safety.

Choose Hilti's CFS-BL firestop block – the perfect choice for passive fire protection. Shop now and experience the unmatched quality and performance of Hilti firestop accessories. Keywords: Hilti Firestop Block, CFS-BL, firestop block for construction, Firestop block for building safety, Hilti firestop solutions, Firestop block for fire safety, Hilti firestop materials, firestop block for passive fire protection, Hilti firestop accessories, Firestop block for commercial buildings, Hilti firestop technology, Hilti CFS-BL block for fire protection, Firestop block for industrial applications, Hilti firestop systems, Firestop block for construction projects, Hilti firestop applications.

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Customer Questions & Answers

Question: How to Shop Hilti Firestop Block CFS-BL Online From Ubuy?

Answer: It’s easy to shop Hilti Firestop Block CFS-BL online from Ubuy. You just have to search for the product, choose your shipping method while checking out and get it delivered to your location.
Question: Is Hilti Firestop Block CFS-BL Available to Shop Online in Botswana?

Answer: Yes, at Ubuy Botswana this product is available for you to shop at a reasonable price. The Hilti Firestop Block CFS-BL is not available locally but you can trust us with our express shipping services.
Question: How Long Does It Take to Get Product After Placing the Order?

Answer: The delivery time of your ordered product varies as per what you've ordered and the shipping method that you've chosen. The estimated delivery time is mentioned during the checkout process, so be carefree while shopping.

HILTI Editorial Review

Hilti Firestop Block CFS-BL features a 1/2 inch thread size and is made from high-quality cementitious material, offering a durable solution for firestop applications. Customers have praised its fine quality, noting high satisfaction levels, while some mentioned limitations in moldability. The product is designed with a professional-grade finish and compatibility with a 5-inch groove diameter, making it a reliable choice for various projects. As per user experience, the fast return process was commendable, indicating good customer service support during purchasing issues.

Customer Reviews & Ratings

3.7

9 customers ratings

5 Star

34%
4 Star

36%
3 Star

14%
2 Star

0%
1 Star

16%

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Pros

High-quality cementitious material
Compatible with 5-inch groove diameter
Professional-grade finish for durability
Quick refund process appreciated by customers
Recommended for its fine quality

Cons

Limited moldability may not suit all needs

Platform Trust & Buyer Confidence

4.2/5 9704 reviews

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“Great products and very good service: very easy and very fast international delivery.”

9 September 2026 · via Trustpilot

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10 September 2026 · via Trustpilot

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“I received exactly what I ordered I was skeptical about your site because that was my first time to order. But the order came timely and neatly packaged. I was not disappointed. Thank you.”

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Verified buyer

“Easy to find and order what you want on the website. Delivery is quick to the UK”

8 September 2026 · via Trustpilot

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Important information

Limitations : For products shipped internationally, please note that any manufacturer warranty may not be valid; manufacturer service options may not be available; product manuals, instructions, and safety warnings may not be in destination country languages; the products (and accompanying materials) may not be designed in accordance with destination country standards, specifications, and labeling requirements; and the products may not conform to destination country voltage and other electrical standards (requiring use of an adapter or converter if appropriate). The recipient is responsible for assuring that the product can be lawfully imported to the destination country. When ordering from Ubuy or its affiliates, the recipient is the importer of record and must comply with all laws and regulations of the destination country.
Not all the products listed on Ubuy are for sale, as Ubuy is a global search engine. Products are subject to export/trade regulations.

BWP 993

Order now and get it around Monday, November 02

QTY:

Only 5 items left in stock.

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Features & Benefits

Firestop putty blocks for both commercial and residential use.
Moldable putty design for easy installation.
Designed to protect electrical boxes from fire hazards.
Can stop flames, gases, and smoke from spreading.
Sized at approximately 8 x 5.25 inches.
Commonly used for fire-stopping electrical boxes in fire-resistive walls.

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Hilti Firestop Block CFS-BL