flange 74 to strengthen the bond between the blower 28 and the blower deck 52 an example of a crimp 75 is shown in the right side of fig5 fig6 shows an alternative embodiment of the present invention as exemplified by a blower deck 90 in each of the blower decks 52 90 the aperture 54 has a first side 92 a second side 94 opposite the first side 92 a third side 96 interconnecting the first and second sides 92 94 and a fourth side 98 opposite the third side 96 and also interconnecting the first and second sides 92 94 the first and second sets of tabs 56 58 are open at a first end 100 of the aperture 54 which is associated with the first side 92 each of the first and second sets of tabs 56 58 are each attached to the blower deck 52 90 on the third and fourth 96 98 sides of the aperture 54 and projecting into the aperture 54 in the blower deck 52 the tabs 60 represent a third set of tabs which include at least one tab connected to the blower deck 52 on the second and third sides 94 96 of the aperture 54 and at least a second tab connected to the blower deck on each of the second and fourth sides 94 98 in the present invention as shown by fig6 the third set of tabs is represented by tabs 102 and 104 where these tabs 102 104 are connected to the blower deck 90 only on the.