It should be emphasized that this purchase-money priority with the 20-day grace period for filing is limited to rights against real-property interests that arise before the goods become fixtures. There is no such priority with the 20-day grace period as against real-property interests that arise subsequently. The fixture security interest can defeat subsequent real-property interests only if it is filed first and prevails under the usual conveyancing rule in subsection (e)(1) [Maine cite subsection (5), paragraph (a)] or one of the other rules in this section.

8. Priority in Fixtures: Readily Removable Goods. Subsection (e)(2) [Maine cite subsection (5), paragraph (b)], which derives from Section 2A-309 and former Section 9-313(4)(d), contains another exception to the usual first-to-file-or-rule. It affords priority to the holders of security interests in certain types of readily removable goods-factory and office machines, equipment that is not primarily used or leased for use in the operation of the real property, and (as discussed below) certain replacements of domestic appliances. This rule is made necessary by the confusion in the law as to whether certain machinery, equipment, and appliances become fixtures. It protects a secured party who, perhaps in the mistaken belief that the readily removable goods will not become fixtures, makes a UCC filing (or otherwise perfects under this Article) rather than making a fixture filing.

Frequently, under applicable law, goods of the type described in subsection (e)(2) [Maine cite subsection (5), paragraph (b)] will not be considered to have become part of the real property. In those cases, the fixture security interest does not conflict with a real-property interest, and resort to this section is unnecessary. However, if the goods have become part of the real property, subsection (e)(2) [Maine cite subsection (5), paragraph (b)] enables a fixture secured party to take priority over a conflicting real-property interest if the fixture security interest is perfected by a fixture filing or by any other method permitted by this Article. If perfection is by fixture filing, the fixture security interest would have priority over subsequently recorded real-property interests under subsection (e)(1) [Maine cite subsection (5), paragraph (a)] and, if the fixture security interest is a purchase-money security interest (a likely scenario), it would also have priority over most real property interests under the purchasemoney priority of subsection (d) [Maine cite subsection (4)]. Note, however, that unlike the purchase-money priority rule in subsection (d) [Maine