Vertical Rod Panic Device Guide: Surface vs Concealed
A vertical rod panic device uses rods that connect the push bar to latches at the top of the door frame and the floor, providing two latch points for added security. They are available in surface mounted and concealed configurations and are commonly used on double door assemblies and fire-rated doors.
Key Features
- Two latch points — top of frame and floor
- Available in surface mounted and concealed versions
- Available with top and bottom rod or top rod only (LBR)
- Works on single doors and double door assemblies
- Required on many fire-rated door assemblies
Device Types
Surface vs concealed vertical rod exit devices
Concealed Vertical Rod Exit Devices
The top and bottom rods are installed inside the door — completely hidden from view. Ideal for a clean architectural look and tamper resistance since the rods cannot be accessed from the exterior. Best suited for new doors built specifically to accommodate the internal hardware. Installing on existing doors requires a skilled contractor.
Surface Vertical Rod Exit Devices
The rods are mounted on the exterior of the door and are visible. Much easier to add to an existing door and are the only option for solid core doors that cannot be routed for concealed rods.
Rod Configuration
Top & bottom rod vs less bottom rod (LBR)
Top & Bottom Rod
Two latch points — top of frame and floor. Maximum security. Required on most fire-rated assemblies. Requires floor prep or threshold work for the bottom strike.
Less Bottom Rod (LBR)
Top latch point only. Easier installation — no floor or threshold prep required. Slightly reduced security. Good option for retrofit installations where floor work is not practical.
Double Door Configurations
Vertical rod devices on double doors
Vertical Rod + Rim or Mortise Device
Two Vertical Rod Devices
Rim Device on Active Door + Vertical Rod on Inactive Door
The rim device strike mounts to the inactive door. The inactive door is secured by the vertical rod device latching at the top frame and threshold. A double door coordinator is required to ensure the active door does not close before the inactive door clears it. Not recommended for double doors in frequent public use.
Vertical Rod on Both Active and Inactive Doors
Four total latch points — two per door. The most secure configuration for double doors and the one most likely to satisfy fire door requirements. Recommended for high-traffic and assembly occupancy doors.
Mortise Device on Active Door + Vertical Rod on Inactive Door
The strike is mortised into the edge of the inactive leaf. An open back strike allows the inactive leaf to open independently if no astragal is present. If an astragal is installed, a double door coordinator is required to ensure proper closing sequence.
Sizing
Measuring for a vertical rod exit device
Unlike rim devices, vertical rod exit devices require both door width and door height measurements.
Door Width
Most models are field sizable within a specified range. See our field sizing guide for instructions.
Door Height
Most vertical rod devices come standard for 7' (84") doors. Extension rods are available for doors up to 10' (120") and are also field sizable.
Need help sizing? Contact us with your door dimensions and we'll confirm the right model.
Need help choosing?
Not sure whether you need a surface or concealed vertical rod device? Contact us with your door type and dimensions. Browse our full panic device collection or return to the Help Center.