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Selkirk 187704 is a 4-inch wall thimble constructed of galvanized steel that provides a protected, finished passthrough where a round duct or vent passes through a framed wall. The single-unit thimble measures approximately 9.4 x 9.4 x 3.9 inches and weighs about 4.8 ounces. It is intended for ducting and vent installations requiring a finished wall penetration.
4-inch galvanized steel wall thimble for finished duct/vent passthroughs; compact dimensions and single-unit packaging.
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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