3M MP+1.4X11 Moldable Putty Stick
The 3M MP+1.4X11 is a dark red intumescent putty stick designed for firestopping cable penetrations through walls and floors. Measuring 1.4 in. x 11 in., this pliable putty easily molds around cables and conduits to create a code-compliant firestop seal rated up to 4 hours.
Key Features
- 4-hour fire rating tested in accordance with ASTM E 814 (UL 1479) and CAN/ULC S115
- Provides draft and cold smoke seal at penetrations
- Pliable and conformable — easily molds into required shapes without tools
- Helps reduce noise transfer (STC-Rating of 56 when tested in STC 56-rated wall assembly)
- Synthetic elastomer intumescent putty material
- Dark red color for easy identification
Specifications
- Model: MP+1.4X11
- Material: Synthetic Elastomer Intumescent Putty
- Color: Dark Red
- Dimensions: 1.4 in. x 11 in.
- Fire Rating: 4 Hours
- Test Standards: ASTM E 814 (UL 1479), CAN/ULC S115
Applications
The 3M MP+1.4X11 putty stick is used by electricians and fire protection contractors to seal cable and conduit penetrations through fire-rated walls and floor assemblies. The intumescent material expands when exposed to heat, closing off the opening to prevent the spread of fire, smoke, and toxic gases between building compartments. Suitable for both new construction and retrofit firestopping applications.










