self tapping threads the stationary brackets 222 are disposed so that the rollers 220 are aligned with the rollers 214 in the direction of arrow 234 the second alternative actuator 210 includes an elongated bar 236 and a pair of ramp structures 238 which are disposed along the actuator 210 to move between the opposing rollers 214 and 220 as the actuator 210 is moved in the engagement direction of arrow 240 the rollers 214 are held in contact with the actuator 210 by means of a number of springs not shown which act in the manner of springs 68 described above in reference to fig3 thus when the actuator 210 is pulled in the engagement direction of arrow 240 the compression panel 212 moves in the direction of arrow 234 for example the flexible member 36 is directed around a floor mounted pulley 242 to be attached to the actuator 210 by means of a screw 244 so that the actuator 210 is moved in the direction of arrow 240 in response to upward movement of the latch lever 34 as described above in reference to fig6 and 7 this movement of the compression panel 212 in the direction of arrow 234 compresses a compressible gasket 70 in the manner described above in reference to fig1 4 an actuator spring 246 is provided to maintain tension within the flexible member 36 and to return the actuator 210 in the direction opposite that of arrow 240 while the ramp structures 238 are shown as extending outward from both sides of the elongated beam 238 it is understood that these structures 238 may alternately extend outward only from one.