1/2" Diameter Hardware Prep Filler (10 Pack)

This 1/2" Diameter Hardware Prep Filler is a UL-certified solution for fire doors, suitable for both removing existing hardware and installing new hardware types. It's application-certified for use on hollow metal and wood fire-rated doors, up to 90 minutes. This product is certified to be used in combination with Gap Guard Fire Caulk to fill through-holes between 1/2" and 2-1/8" in diameter. It's certified for use in the US and Canada, and requires the use of GapGuard Fire Caulk (sold separately).

• UL Certified for Fire Doors: Removes Existing Hardware or Accommodates New Hardware
• Certified for Hollow Metal and Wood Fire-Rated Doors, up to 90 Minutes
• Combination Certified: Gap Guard Fire Caulk for Thru-Holes (' to 2-1/8')
• US and Canada Certified Use
• GapGuard Fire Caulk Required (sold separately)