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Fox Blocks 8 inch Fox Buck (10 pcs)

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Fox Blocks ICF 8" Fox Buck - (10 unit bundle) 

Fox Buck is a fully integrated, continuous insulation window and door buck for residential and commercial applications.

The notches on the buck provide a dual barrier against moisture and draft getting through building doors and windows. Enabling a complete concrete pour so the concrete is continuous around the entire opening. The block anchors the Fox Buck to the wall with enough strength for weather events. Each buck is two inches thick and 48″ long to match the length of the three full Fox Blocks. 


  • 2" thick, 48" long. 40 lineal feet per 10 unit bundle 
  • Dual full-length grooves provide a barrier against drafts and moisture
  • Available in 4", 6", 8", 10" and 12" sizing

View the entire Fox Block Catalog

Looking for a quote for your project? Find the Fox Blocks Project Quote Form Here> 

(800) 567-5358 

Fox Blocks are sold in bundle quantities only.