Fire Rated Dust Prevention Automatic Drop Down Door Bottom Seals Concealed With Side Edge 800mm

Features:

This item has the side edge on the bottom, can screw fix it from the door bottom, suitable for the metal door which no need to make the through groove in the door, cannot see any other things except the copper bolt, it is more invisiable. This Heavy Duty design makes it more fit the hotel door, entrance door or some other more heavier door.

A concealed, automatic door bottom seal that is spring loaded to lift clear of the floor when the do or is opened.

It is acoustically designed, featuring silicon gaskets for medium temperature smoke and fire door applications.

Operated automatically by pressure against the door jamb on its adjustable strike.

lt can also be fitted into the bottom rail of a meta door by the fabricator.

Location: Fully mortised into the groove in the bottom of single and double butt-hinged door.

Installation: Fixing screws are supplied. This seal is mortised. Pre-drilled Square end plates are supplied which also secure the product in place.

Seal: Silicon Rubber in gray color. Can change it tothe fire retadant silicone strips if need use it for Fire door, pirce is US$0.2 more expensive than normal silicone strips.

Installation instruction:

Step 1. Make sure the install direction. The end with copper bolt is near to the frame with hinges and the hermetic seal face to floor.
Step 2. Make sure the bottom seal length can fit the door:
The length of BH-M021 bottom seal should be 3-5mm shorter than width of the door if need to make the side plates implant of the door leaf. If not, the length should be same as the door width.
Step3. According to the frame and door size, cut the end without copper bolt to get the proper length.
Step4. Adjust : After installation. Open the door and turn on the copper bolt out or in to adjust the drop down parts to touch the floor slightly when the door closed.

Note: if there are too few ejections, the sealing effect cannot be reached; If there are too many ejections, it is easy to scratch with the floor and damaged the seals when closing the door, so it needs to be repeatedly adjusted to achieve the best sealing effect.

Specifications: