1.Prepare tools such as a saw, screws, runt, ruler etc.
2.Use a ruler to measure the length of the door.
3.Subtract 5mm from the measured value in step 2 and the mounting length.
4.Saw off the excess with a saw, note that the cut side is the side without the knob.
5.Use the runt to polish the sharp edges, and complete the cutting step!
6.Remove the housing (omit this step if there is no housing)
7.After determining the fixing position, use screws to fix the installation.
8.After completing the screw fixing, install the housing.
#Automaticdropseals
#automaticdoorbottom
#firedoor
#doorbottomseal