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The RECTORSEAL SST-AA is designed for transitioning between a furnace and a box coil. Its dimensions measure 21 inches by 14 inches, compatible with box coils sized 21 inches by 14.25 inches.
Compatible with box coils sized 21 inches by 14.25 inches.
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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