Free freight for online orders over $200
Heavy duty; can be cut and installed from inside building. For 4″ schedule 40 PVC.
For installations from the roof, search “roof jack” for strong, low-cost flashing.
Typically we keep a dozen on hand. For larger orders call for lead times and bulk pricing.
For use when radon exhaust system penetrates roof. Contractors like the ease of installation from the attic side with this model.
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