Wood Blocks by Bio-Diversity.

(Our Envi Blocks are an efficient and environmentally-friendly firewood alternative)

Bio-Diversity Envi Blocks are an all-natural wood product made from a naturally renewable resource (hardwood sawdust and shavings).

They contain no additives, binders or chemicals, so they burn clean without releasing toxins into the environment. Designed for use in fireplaces, wood stoves, wood furnaces and fire pits, they’re a perfect alternative to firewood. Ultra-efficient, Envi Blocks will burn for an average of eight to ten hours.* To maximize home heating dollars, you can’t beat the versatility and endurance of Envi Blocks by Bio-Diversity!

We produce two sizes of Envi Block to meet homeowners’ needs:

  • The Envi

    • Our original size of 4”x 4” x 10 ¼”
    • Weighs between 6 and 7 pounds
    • Sold in bulk quantity comprising of packs of containing 3 blocks.
  • Envi 8

    • Sized at 3 ¼” x 2 ¾” x 9 ½”
    • Weighs between 3 and 4 pounds
    • Sold in bulk quantity comprising of packs containing 6 blocks.