| 摘要 |
Nail or screw holes are provided on the body of a trim unit so that the trim body can be more robustly secured to the building structure, beneath a slidable moulding which in a first position reveals these holes and in a second position covers the holes. This sliding is preferably achieved by a self-retaining interference connection, such as a dovetail joint, between a movable moulding part and the body of the trim unit. In a further preference, the moulding has a stationary portion that is fixed with respect to the trim body, and a movable portion which, after attachment of the trim body to the structural member, can be slid into engagement with the stationary portion and glued thereon to complete the moulding. |
