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Blackthorn, LLC.
Innovative Solutions for the Precast Industry
Fiberglass Hole-Formers
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Flat Wall Hole-Formers
(Click on a style to see available sizes)
Round
Round Boot/Minimal Taper
Doghouse/Rathole
Rectangular
Elliptical
Oval (angled entry)
Stepped (headwall)
Corner
Slant/Skew
Cylindrical/Round Wall Hole-Formers
(Click on a style to see available sizes)
Round
Round Boot/Minimal Taper
Doghouse/Rathole
Rectangular
Elliptical
Parallel
