Mann McGowan DD-1703ACU, is a robust twin adjustable threshold seal which allows the drop mechanism to be adjustable at both ends for both downward movement and tilt control to provide strong even pressure over the entire length, so providing an enhanced seal which can be fine tuned to suit the envi..
Mann McGowan DD-420S, is a robust threshold seal providing acoustic, cold smoke and environmental sealing when used in conjunction with suitable doors.DD-420S has achieved a 30 minute fire rating when tested to BS 476 pt. 22 1987.Acoustic values of upto 34dB can be achieved depending on door ty..
Medium Duty
An automatic threshold (door bottom) seal with a high efficiency mechanism which lifts the seal clear of the floor as soon as the door is opened by a few millimetres. No power supply is needed.
Tested for reliability, the seal completed 1 million cycles without fail..