Drop-In & Under Deck Firestop Devices | HoldRite HydroFlame

Firestopping pipe penetrations is an important part of commercial construction, but it can also be time-consuming and inconsistent when using traditional methods. That's why HoldRite developed HydroFlame™ Drop-In (DID) and Under Deck (UDD) Firestop Devices. It’s a simple solution designed to help you install firestop systems faster while supporting code compliance. 

Simplify Firestop Installation

The innovative clamshell-style design wraps around the penetrant, making installation quick and consistent while simplifying retrofit applications where piping is already installed. Instead of relying on field-built methods, this standardized solution helps create repeatable results across the jobsite.  

Whether you're working on new construction or retrofit applications, these devices can be installed:

• From the top side or underside of the deck.
• Before or after pipe installation.
• In corrugated metal, flat form, and precast deck applications.
• With non-metallic, metallic, and insulated metallic pipes. 

Fire, Smoke, and Code Compliance

HydroFlame Drop-In and Under Deck Devices combine multiple layers of protection in a single solution. The devices incorporate firestop materials and smoke-sealing components designed to help maintain the integrity of rated floor assemblies.  

The devices are:

• UL Fire Tested and Listed.
• Tested to ASTM E814, UL 1479, and CAN/ULC S 115 Testing Standards.
• Available with typical 2- or 3-hour F-ratings, depending on concrete thickness and the applicable UL system. 

Spec Sheet

Built for a Wide Range of Applications

Commercial jobs rarely present the same installation conditions from floor to floor. HydroFlame devices are engineered to accommodate a broad range of applications, including:

• Plastic piping
• Metallic piping
• Insulated metallic piping
• New construction projects
• Retrofit installations
• Precast and hollow-core systems

Optional accessories include sheet metal sleeves for precast applications and OSHA-compliant safety caps for Drop-In Devices. Check out HoldRite’s entire offering below. 

Discover: HoldRite Drop-In Devices 

Install Steps: Drop-In Devices

Always follow the applicable UL system and current HoldRite installation instructions.

For new installations (before pipe is installed): 

• Core drill the hole to the required size.
• Insert the Drop-In Device into the opening.
• Secure with two approved fasteners.  
• (Optional) Install the safety cap.  
• Remove the cap and install the pipe through the device.  
• Apply sealant if required by the UL system.  

For retrofit applications (pipe already installed):

• Confirm the pipe is centered in the opening.
• Open the clamshell device and wrap it around the pipe.  
• Close and latch the device.
• Insert into the opening and secure with two approved fasteners.  
• Apply sealant if required by the UL system.

Install Instructions

Install Steps: Under Deck Devices

Always follow the applicable UL system and current HoldRite installation instructions.

For new installations (before pipe is installed): 

• Core drill the hole through the deck and concrete.  
• Install the Under Deck Device from below.
• Secure with a minimum of four approved fasteners.  
• (Optional) Install the hole cover.
• Remove the cover and install the pipe.
• Apply sealant if required by the UL system. 

For retrofit applications (pipe already installed):

• Ensure the pipe is centered in the opening.  
• Open the clamshell device and place it around the pipe.  
• Close and latch the device.
• Secure with a minimum of four approved fasteners.
• Apply sealant if required by the UL system. 

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