Trimco 3913 Manual Flushbolt - Wood Door - Extruded

The Trimco 3913 is a manual flush bolt for wood doors with an extruded high-density body. It installs at the top corner of the inactive leaf on a pair of wood doors and secures that leaf to the frame by sliding a 3/4" bolt into a strike mounted in the head frame. The bolt is manually operated: the occupant slides it to engage or disengage. A metal dust cover is included.

The 3913 is UL listed for use on labeled wood fire doors rated up to 1-1/2 hours. American Locksets is an authorized Trimco dealer.

What a Manual Flush Bolt Does and Where It Installs

On a pair of doors, one leaf is active (the one with the primary lock) and the other is inactive. The inactive leaf needs to be held in position at the top and bottom so the active leaf can close and latch properly. The Trimco 3913 is the hardware that secures the inactive leaf at the top. A companion flush bolt (bottom-mounted) handles the floor strike.

The 3913 mounts flush against the face of the inactive wood door leaf, near the top. When the occupant engages the bolt by sliding the finger down, the 3/4" bolt extends into the head frame strike and holds the door leaf in position. When they need to open the inactive leaf — to move furniture, equipment, or comply with egress width requirements — they slide the finger in the opposite direction to retract the bolt.

Manual flush bolts are the right specification when the inactive leaf needs to be opened periodically but doesn't need to operate automatically every time the door closes.

Extruded Body vs Wrought: What the Distinction Means

The Trimco 3913 "extruded" designation refers to the manufacturing process of the bolt body. Extruded bodies are formed by forcing high-density aluminum alloy through a die, producing a consistent, dense grain structure throughout the body. This process delivers greater strength and durability compared to cast or stamped bodies and is the construction used in Trimco's 3910 Series.

The W3913 (wrought version) is also available. Wrought bodies are formed from sheet or bar stock. Both the 3913 and W3913 serve the same function and mount in the same location — the choice is typically a specification or architect decision based on project hardware schedule requirements.

Full Specifications

Overall body dimensions: 1" x 6-3/4" x 2-1/2" (25mm x 171mm x 64mm).

Bolt throw: 3/4" (19mm).

Construction: High-density extruded body. Stainless steel finger for long-term reliability and corrosion resistance. Positive spring action fully locks or unlocks the throw with no partial engagement.

Included: Metal dust cover. The dust cover keeps debris from entering the bolt track when the inactive leaf is standing open for extended periods.

Fire rating: UL listed for labeled wood doors rated up to 1-1/2 hours.

Handing: Not applicable. Flush bolts are not handed.

Door type: Wood doors only. For metal doors, see the Trimco 3910 Series metal door flush bolts.

Installation: Surface mount at top corner of inactive wood door leaf. Mounts with screws into the door face edge.

Finishes and Trimco 3915

Available finishes include 626 Satin Chrome (US26D), 613 Dark Oxidized Oil Rubbed Bronze, and other standard Trimco architectural finishes. The SKU on this listing is 3913 626 (Satin Chrome).

The Trimco 3915 is a related model in the same flush bolt family with a different configuration. If you're looking for the 3915, contact American Locksets by phone at 877-471-4870 or via chat to confirm availability and specifications.