Roller Support: (KR4)
Designed to support pipe diameters up to 4". Material Included: Molded recycled rubber curb, Non-adjustable roller assembly. For low profile pipe 4" off roof surface, non-adjustable.

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Adjustable Roller Support: (KRA)
Molded recycled rubber has two carbon steel threaded rods that provide roller hieght up to 13". Curbs do not need support pads and may be used as isolators.

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