tube 80 and rib 82 extends downwardly from the planar base 20 inwardly from the second corner fin 60 other than placement the second semicircular tube 80 and rib 82 are completely identical to the first semicircular tube 70 and rib 72 three central fins 90 92 94 are spaced from one another and extend downwardly from the central portion of the planar base 20 the corner fins 50 60 the semicircular tubes 70 80 and the central fins 90 92 94 are all extruded from a polymeric material which is softer than the material used for the base 20 and the upwardly extending members 22 24 this material can be the same material used for the engagement members or material having different characteristics fig3 shows the seal 10 mounted on a door 12 at the bottom of the door the first upwardly extending member 22 lies close along the bottom of one side of the door the second upwardly extending member 24 lies close along the bottom of the other side of the door and the planar base 20 lies close along the bottom of the door the engagement members 30 40 are deformed and pushed into very tight engagement against the sides of the door 12 a significant surface area of each engagement member 30 40 is in contact with the surface of the door 12 and holds the seal 10 in place on the door 12 the two upwardly extending members 22 24 can flex and change their relative orientation with respect to the base 20 this allows the seal to be applied to doors having various widths the illustrated embodiment can accommodate a door from about 1 5 inches thickness to about 1 75 inches thickness and still maintain an.