The transom bolt is a mechanical device,
mortised into the header of a double door, that
contains a spring-loaded ball on one end and a
round bolt on the other end that interact with a
catch on the top of the active door and a strike
on the top of the inactive door, respectively.
When the ball is depressed the corresponding bolt
projects and as the ball is released the bolt
retracts, similar to a seesaw system.
The purpose of the transom bolt is to
allow a pair of doors to open and close together
to gain full use of the entire opening without the
necessity of releasing and securing the inactive
door after every operation. The transom system
allows both doors to be opened virtually
simultaneously upon retracting the conventional
latch. The doors can be closed together as long as
the inactive door is closed slightly ahead of the
active door.
Transom bolts are especially ideal for small
double door situations such as bedrooms, master
baths, closets, French doors, patio doors and
offices. They are most commonly used on interior
doors but can be utilized for exterior doors where
UL fire ratings are not required. The transom
facilitates the elegance of double doors while
maintaining practicality through the ease of
operation:
- Far more convenient than manual flush bolts which require a manual release or manual locking for every simultaneous opening or closing of a pair of doors
- Superior to automatic flush bolts in aesthetics, less exposed hardware, smoother operation and much easier to install
- Ball catch on top of active door is easily adjustable (with screwdriver) to account for variation of door to header clearances
- As opposed to standard ball catches, transom bolts allow conventional locks to be used while simultaneously opening and closing doors.
FINISHES
The face plate and strike come in most standard architectural finishes. If the required finish is not listed below, please call 203.348.8865 for assistance. To view pictures of the most commonly supplied finishes, please click here.
| BHMA No. | ||
| Primed for painting | USP | 600 |
| Polished brass (highly polished brass and lacquered) | US3 | 605 |
| Polished brass, no lacquer (highly polished brass, not lacquered) | US3NL | |
| Satin brass (satin and lacquered) | US4 | 606 |
| Satin brass and black (oxidized, relieved and lacquered) | US5 | 609 |
| Satin brass and brown (oxidized, relieved and lacquered) | US6 | 608 |
| Polished brass and black (oxidized, relieved and lacquered) | US7 | 610 |
| Polished bronze (highly polished bronze and lacquered) | US9 | 611 |
| Polished bronze, no lacquer (highly polished bronze, not lacquered) | US9NL | |
| Satin bronze (satin and lacquered) | US10 | 612 |
| Oil rubbed bronze (dull, slightly oxidized, oil rubbed) | US10B | 613 |
| Bright nickel plated (polished brass, nickel plated) / polished nickel | US14 | 618 |
| Satin nickel plated (satin brass, nickel plated/brushed nickel) | US15 | 619 |
| Antique nickel, dull (nickel plated brass, oxidized and relieved) | US15A | 620 |
| Satin black (black lacquer over sanded brass) | US19 | 622 |
| Polished chromium (highly polished, plated on brass) | US26 | 625 |
| Satin chromium (satin, plated on brass) | US26D | 626 |
| Bright stainless steel (highly polished) | US32 | 629 |
| Satin stainless steel | US32D | 630 |
