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FROST CUSHION

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Description: An expanded polystyrene void form material for use under grade beams and other concrete elements, where the weight weight of the concrete component plus the weight of the supported structure will cause void material compression, preventing damage form subgrade expansion. 

Advantages: Absorbs frost and moisture induced swelling of underlying soil. Freeze/thaw resistant and low moisture absorption. Biologically insert will not support mold, mildew or fungus growth. 

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