Metacaulk Firestop Pillows

DESCRIPTION: Ready-to-install package of layered precured dry intumescent, made for use in large openings with cables, cable trays, blank openings or multiple penetrating items.


  • Intumescent expands at the exposure of heat, forming a refractory char that tightly seals preventing the spread of flame, smoke and toxic fumes
  • Easy to install with no tools and no cure time required; no wire mesh required in certain installations (some UL designs using multiple pillows require sealant or putty to fill in the gaps)
  • Reusable & can be removed/reinstalled if needed
  • Cost effective and versatile
  • Two sizes available

PERFORMANCE: UL Classified system up to 3 hrs; tested in accordance with ASTM E814 (UL 1479) and CAN/ULC-S115; VOC compliant (CDPH Standard Method v1.2); complies to Required Environmental Exposure Testing of Accelerated Aging and High Humidity as per UL 1479 Fire Test of Through-Penetration Firestops


Firestop Pillow BIM

Product Variations

  • 66362 - Metacaulk Firestop Pillows 2" x 9" x 6"
  • 66363 - Metacaulk Firestop Pillows 3" x 9" x 6"



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