Factory Direct Hardware Von Duprin 9957EO26D3 - Manual (Page 18)

9857/9957 Three-Point Latching Device
16 © 2004 Ingersoll-Rand. May be copied for use with specification submittal.
9857/9957 three-point latching device for all types of single or double doors, UL listed for Panic Exit Hardware.
Devices are ANSI A156.3 – 2001 Grade 1. Covers stock hollow metal doors with 86 or 161 cutouts. The 9857
device has a smooth mechanism case and the 9957 device has a grooved case. The three-point latching device
is non-handed except when the following device options are used: SD (Special Dogging), or SS (Signal Switch).
See Opposite page for available outside trim and functions.
The 9857/9957 devices are available in the following finishes: US3, US4, US10, US26, US26D, US28, 313AN,
315AN and US32D for the 9857 device only. See page 52 for component finishes and the inside cover for
finish chips.
Vertical rod and latch guards are available to protect the bottom rod of the exit device from damage by impacts
of carts or gurneys passing through doors. Refer to Page 49.
Top Latch
Bottom Latch
299
Top & Middle
Strike
248L4
Bottom Strike
for use with
threshold
304L
Bottom Strike
Specifications
Device Functions Device ships EO/DT/NL. Field selectable. For TP,K,or L remove NL drive
screw from device
Device Lengths 3’ 2’4" to 3’ (711mm to 914 mm) Door Size
4’ 2’10" to 4’ (864 mm to 1219 mm) Door Size
Strikes Top & Middle-299–Dull Black, Bottom–248L4 & 304L-Unfinished
Optional Strikes – see page 39
Dogging Feature Hex key dogging standard
Dogging Options CD Cylinder Dogging see page 48
SD Special Center Case Dogging see page 48
LD Less Dogging see page 48
Electric Options LX Latchbolt Monitor Switch see page 42
RX Pushpad Monitor Switch see page 42
RX2 Double Pushpad Monitor Switch see page 42
EL Electric Latch Retraction see page 43
SS Signal Switch see page 43
CX Chexit Delayed Exit see page 45
ALK Alarm Exit Kit see page 42
Miscellaneous Options PN Pneumatic Latch Retraction see page 48
LBR Less Bottom Rod see page 49
GBK Glass Bead Kit see page 49
Fasteners & Includes 1 ³ ₄" (19mm) – 2 ¹ ₄" (57mm) Wood & Metal Doors
Sex Bolts (SNB) SNB furnished for top & bottom latches
Optional SNB available for device, see next page for quantities
Latch Bolt Deadlocking Anti-friction Top & Bottom Bolt, ⁵ ₈" (16mm) throw
Deadlocking Rim Bolt, ³ ₄" (19mm) throw
Device Centerline from 39 ¹³ ₁₆" (1011 mm)
Finished Floor
Door Undercut ¹ ₄" (7mm)
Center Case Dimensions 8" x 2 ³ ₄" x 2 ³ ₈" (203mm x 70mm x 60mm)
Mechanism Case Dimensions 2 ¹ ₄" x 2 ¹ ₄" (57mm x 57mm)
Top & Bottom Latch Case 4 ¹ ₂" x 2 ¹ ₈" x 1 ¹ ₂" (114mm x 54mm x 38mm)
Vertical Rods ¹ ₂" square tubing, standard rods accommodate 7’ (2134mm) door
Top rod length is 34 ¹⁵ ₁₆" (887mm)
Bottom rod length is 31 ¹ ₄" (794mm)
Extension rods available, 1’ (205mm) or 3’ (914mm) for doors over 7’
One piece top rod available for 8’ (2438mm) – 10’ (3048mm) door
Projection Pushbar Neutral – 3 ¹³ ₁₆" (97 mm)
Pushbar Depressed – 3 ¹ ₁₆" (78 mm)
See page 53 for How to Order specification