Other Hardware Items
Hinges, locks, door closers, and exit devices make up the main commercial hardware products for an opening. Here we'll touch on some of the other items...wall and floor stops, silencers, door viewers, flushbolts, surface bolts, thresholds and weatherstripping.
Flush Bolts and Surface Bolts
When you have a pair of doors, the inactive door will have to be held secure in some way so that the active door can lock into it. When you are using exit devices on the doors, a vertical rod exit device on the inactive door takes care of this. When you have a standard lock on the active door, you will have to use either flush bolts or surface bolts.
The standard lever extension flush bolts are shown below. One is installed in the top edge of the door and the other in the bottom edge. You simply operate the levers up or down to set or open the flush bolts while the active door is open. These are the standard flush bolts supplied with doors and what we supply unless something else is specified.
Automatic flush bolts serve the same purpose as the standard flush bolts except they are automatic and do not require manually working the lever up or down. When the active door closes, it makes contact with the latches on the surface plate which causes the flush bolts to move up at the top and down at the bottom locking the inactive door. When the active door is opened, the flush bolts automatically retract leaving the inactive door unlocked as well.
Combination flush bolts have an automatic flush bolt at the bottom. The top bolt is actually a latch (just like the latch on a standard lockset) versus a bolt. The inactive door can be closed without any manual operation as this latch will retract (the same as the latch on a lock does) when the door is closed and it will extend back out once completely closed. When the active door is opened, the top flush bolt can be released by pressing a plunger button on the bolt face.
Flush bolts mount in the edge of the door and they are concealed when the doors are closed. Surface bolts mount on the inside surface of the door making them exposed. As a hardware item, they are roughly the same price as the standard flush bolts but there is no prep work involved on the door or frame for surface bolts which makes the overall cost a little cheaper. These are good to use for storage room doors and other ares where appearance is not a concern. They are also required on wind load rated (hurricane tested) pairs of doors.
Thresholds and Door Sweeps
Shown below is a saddle type threshold. It can be used by itself or with a door sweep if you want to provide a seal with the door and threshold.
The bumper threshold provides a seal and threshold in one piece. The seal can be vinyl, neoprene, or silicone. The one shown below allows for a 3/8" undercut on the door...which is required to meet handicap code. A higher threshold is required when you are able to use the standard 3/4" undercut doors.
A door sweep can be used alone or with a saddle threshold like the one above. Shown below are 2 variations...the 307AV on the left and the 315CN on the right.
Surface Mounted Automatic Door Bottoms
The automatic door bottom shown below is available in aluminum, gold, or dark bronze and the seal can be neoprene (shown) or silicone.
Automatic door bottoms are also available in stainless steel.
Shown below are 2 other types of automatic door bottoms so you can see we have a variety of different types available.
The weatherstrip shown below is a self adhesive or "stick-on" weatherstrip.
The weatherstrip shown below is a screw on type that will attach to the frame and seals against the door.
Some weatherstripping is also used as meeting stile gasketing...to cover the gap between a pair of doors.
Below is the same thing but with magnetic pieces to create a mag astragal set.