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The Hoffman AS300 is a reliable hole seal designed for external mounting in industrial enclosures. With a diameter of four point twelve inches, it effectively seals three-inch conduit holes. Constructed from mild steel and finished with powder coating, this product ensures durability. It is part of the Hol-Sealers family, suitable for power distribution, controls, and drives.
Designed for use in a variety of industrial environments, the Hoffman AS300 hole seal offers robust protection against the elements and precision in sealing.
We pulled together the parts most installs need for this unit, plus a few add-ons worth a look. Check what you need — nothing here blocks checkout.
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