Montana Title 70. Property § 70-15-103. Fixture defined

(1) attached to it by roots, as in the case of trees, vines, or shrubs;

(2) imbedded in it, as in the case of walls;

(3) permanently resting upon it, as in the case of buildings; or

(4) permanently attached to what is thus permanent as by means of cement, plaster, nails, bolts, or screws.