Rated 5 based on 1 product reviews
CONTACT INFO
1500 1st Ave. N. Suite 75
Birmingham, AL 35203
Toll Free: 888-876-1025
Phone: 205-639-5000
Continuing Education Logo
Request for information FireRock Building Materials Contact Us / RFI
Use FireRock Offset Blocks when design paramerers do not allow for a vertical chimney installation. Offset Blocks allow you to move the chimney path so that objects, such as another fireplace, may be positioned above the firebox.

A non-combustible column under every fifth block must support the Offset Blocks in a series. Offset blocks are stacked in series with each one providing a maximum offset 2 5/8″. Offset direction may be left, right, back, or in a spiral pattern for ™twisting™ flues.
  • Offset Block Height:4"
  • Additional Measurements: 24" (W) x 28" (L)
  • Maximum Horizontal Distance (or max offset): 40"
  • Clearances: 1" clearance to combustibles
  • Each block has an angled flue hole that provides a 30 degree vertical passageway for flue gases
  • Good for moving the chimney outside the wall of the home to avoid interference with the upstairs floor plan

Important: Please consult local building codes for specifics regarding all masonry fireplace applications.
- Hide Gallery
Offset Blocks