Air seal for a liftable closure

11:

• The device of claim 10, wherein the base structure of the sealing member connected to the front wall comprises at least one L-shaped angular section bar arranged substantially perpendicular to said vertical guide elements.

12:

• The device of claim 10, wherein the base structure of the sealing member connected to said front wall comprises a pair of parallel L-shaped angular section bars, arranged substantially perpendicular to said vertical guide elements.

13:

• The device of claim 11, wherein each of said angular section bars has a first wing intended to be applied to the front wall and provided with a series of first slots directed transverse to its axial direction which form part of said first fastener, at least some of said first slots being adapted to be engaged by respective adjustable fastening members projecting from the front wall, such as screws or pins associated with anchors or the like, and a second wing substantially perpendicular to the front wall for the connection of a lamina connected to said ferromagnetic plate and having a series of second slots, and in which a series of third slots is formed in said lamina which are directed perpendicular to the ferromagnetic plate, a pair of slots of said series of second and third slots, both being engaged by adjustable rod-shaped fixing members which are part of said second fastener, each of which preferably comprises a nut screw and a respective tightening nut.

14:

• The device of claim 13, wherein said ferromagnetic plate is connected to a pair of laminas parallel and transverse thereto, both provided with respective series of slots.

15:

• The device of claim 14, wherein an inclined wall is interposed between said ferromagnetic plate and each transverse lamina.

16:

• The device of claim 13, wherein said ferromagnetic plate is connected to a single lamina transverse thereto, provided with a respective series of slots.

17:

• The device of claim 16, wherein an inclined wall is interposed between said ferromagnetic plate and the respective transverse lamina, the ferromagnetic plate having an inclined or arched edge on its side opposite to the transverse lamina.

18:

• The device of claim 10, wherein said closure element comprises a flexible curtain of plastic material such as PVC, polyethylene or polyurethane.

19:

• The device of claim 10, wherein said closure element comprises a series of substantially rigid elongated panels connected to each other in an articulated manner by hinges.