Von Duprin 5575-4ft Narrow Sti...
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$3,574.00
$3,302.29
Von Duprin 5575-4ft Narrow Stile Crossbar Mortise Lock Exit Device, 4ft Grade 1, Field Reversible

Von Duprin 5575-4ft Narrow Stile Crossbar Mortise Lock Exit Device, 4ft Grade 1, Field Reversible

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Model: 5575EO-US4-4
$3,574.00
$3,302.29
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In Stock (leaves warehouse same day if ordered before 3pm ET)

$3,574.00
$3,302.29
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Von Duprin 5575-4ft Narrow Stile Crossbar Mortise Lock Exit Device, 4ft Grade 1, Field Reversible

Classic Narrow Stile Crossbar Exit Device with Mortise Lock for Single and Double Door Applications

The Von Duprin 5575-4ft is a 4-foot narrow stile crossbar mortise lock exit device from the renowned 55 Series, engineered for single and double door applications in commercial environments. This device features a field-reversible 7500 Mortise lock that can be reversed without removing the lock from the door, and includes a non-handed auxiliary bolt for deadlocking along with a faceplate with an adjustable bevel. Rated ANSI/BHMA A156.3, 2008 Grade 1 and UL listed for accident hazard installations, the 5575-4ft is available in a 48" product size and is field sizeable for versatile installation. Wood doors require the 589 cover plate, and the device is specified for 2-1/4" doors with a door thickness range of 1-3/4".

Professional Features & Benefits

  • 4-Foot Narrow Stile Design: Available in a 48" (4ft) length that is field sizeable for single and double door applications, offering installation flexibility across a range of commercial openings.
  • Precise Component Dimensions: Hinge stile case and lock stile case each measure 7-1/4" x 1-1/4" x 2-1/4", with a product projection of 3-3/4" and a latch throw of 1/2" for reliable mortise lock engagement.
  • Field-Reversible Mortise Lock: The 7500 Mortise lock is field reversible without removing the lock from the door, simplifying handing changes and reducing installation time on the job site.
  • Non-Handed Auxiliary Bolt: Includes a non-handed auxiliary bolt for deadlocking and a faceplate with an adjustable bevel, enhancing security and adaptability for varied door preparations.
  • ANSI/BHMA Grade 1 Certified: Meets ANSI/BHMA A156.3, 2008 Grade 1 certification, along with ANSI/UL 305, CAN/ULC-S132, and fire-rated configurations meeting ANSI/UL 10C and CAN/ULC-S104 standards.
  • Hex Key Dogging Configuration: Features hex key dogging for convenient hold-open capability, suitable for high-traffic commercial applications.
  • Versatile Device Type Options: The 55 Series supports rim (surface-mounted vertical rods — type 27), concealed vertical rods (type 47), and mortise locks (type 75), with fire-rated versions available by adding the “-F” suffix.
  • Extensive Options and Accessories: Compatible with E8875 electrified option for access control or fire alarm system integration, RX door monitoring switch, and KN knurling on crossbars for tactile hazard warnings. Accessories include mullions, power transfers, and strikes.
  • Multiple Trim Functions Available: Supports Classroom, Dummy, Exit Only, Passage, and Storeroom functions; popular 990 pull trim includes all five functions as standard configurations.
  • Fastener Inclusion: Includes screw pack for 1-1/4" and 2-1/4" thick metal/wood doors for straightforward installation on common door types.

Technical Specifications

  • Product Group: Exit Devices and Trim
  • Series: 55 Series
  • Grade: Grade 1
  • Fasteners: Screw pack for 1-1/4" and 2-1/4" thick medal/wood doors.
  • Product Subgroup: Exit Devices - Mortise
  • Product Type: Exit Devices - Mortise
  • Subcategory: Mortise Exit Devices
  • Latch Throw: 1/2"
  • Commercial/Residential: Commercial
  • Stile Type: Narrow Stile
  • Door Hand Direction: Field Reversible
  • Door Thickness Range: 1-3/4"
  • Product Size: 48"
  • Dogging Configuration: Hex Key Dogging
  • Product Dimension: 7-1/4" x 1-1/4" x 2-1/4" (Hinge Stile Case), 7-1/4" x 1-1/4" x 2-1/4" (Lock Stile Case)
  • Fire Rating: No
  • Product Projection: 3-3/4"
  • Product Style: Cross Bars
  • Product Category: Exit Devices and Trim
  • Department: Door Hardware

Professional Applications

  • Commercial Office Buildings
  • Educational Facilities
  • Healthcare Institutions
  • Retail Establishments
  • Industrial and Warehouse Facilities
  • Multi-Tenant Residential Properties
  • Government and Municipal Buildings
  • Historical and Retro-Inspired Architecture

Why Choose Von Duprin Quality?

Von Duprin exit device products deliver professional-grade reliability backed by ANSI/BHMA A156.3, 2008 Grade 1 certification and UL listing for accident hazard installations. The 5575-4ft features a field-reversible mortise lock, non-handed auxiliary deadlocking bolt, and precise 48" field-sizeable construction engineered for demanding commercial applications. With support for multiple trim functions, optional electrified configurations, and compatibility with access control and fire alarm systems, Von Duprin 55 Series devices are a trusted solution where dependable performance and code compliance are essential.

Manufacturer Resources

Von Duprin 98/99 Series Catalog

Product Specs

Product Group:
Exit Devices and Trim
Series:
55 Series
Grade:
Grade 1
Fasteners:
Screw pack for 1-1/4" and 2-1/4" thick medal/wood doors.
Product Subgroup:
Exit Devices - Mortise
Product Type:
Exit Devices - Mortise
Subcategory:
Mortise Exit Devices
Latch Throw:
1/2"
Commercial/Residential:
Commercial
Stile Type:
Narrow Stile
Door Hand Direction:
Field Reversible
Door Thickness Range:
1-3/4"
Product Size:
48"
Dogging Configuration:
Hex Key Dogging
Product Dimension:
7-1/4" x 1-1/4" x 2-1/4" (Hinge Stile Case), 7-1/4" x 1-1/4" x 2-1/4" (Lock Stile Case)
Fire Rating:
No
Product Projection:
3-3/4"
Product Style:
Cross Bars
Product Category:
Exit Devices and Trim
Department:
Door Hardware

Von Duprin 5575EO-US4-4 – Frequently Asked Questions

1) Will the Von Duprin 5575 mortise exit device work on a 1-3/4 inch door?
Yes. The 5575 is built for 1-3/4 inch doors, which is the standard commercial door thickness. It ships with a screw pack covering 1-1/4 inch and 2-1/4 inch thick metal and wood doors, so the fasteners in the box cover the common preps you will meet on a commercial opening. On wood doors you also need the 589 cover plate, ordered separately.
2) Do I have to order the Von Duprin 5575 handed, or can I flip it in the field?
Handing is a selection on the order (LHR or RHR), but the 7500 mortise lock inside is field reversible without pulling the lock out of the door. If a door gets rehung or the handing on the drawing turns out to be wrong, you change it on site rather than sending the device back. The faceplate bevel is adjustable too, and the auxiliary deadlocking bolt is non-handed.
3) My door opening is narrower than 48 inches. Can the Von Duprin 5575 4ft device be cut down?
Yes. The 5575 comes at 48 inches and is field sizeable, so a crossbar device ordered at 4ft can be trimmed to suit a narrower leaf on site instead of being reordered in a different length. The hinge stile case and lock stile case each measure 7-1/4 x 1-1/4 x 2-1/4 inches, so those end cases set the minimum the crossbar has to span between.
4) Will the Von Duprin 5575 latch into the strike I already have in the frame?
Latch throw on the 5575 mortise lock is 1/2 inch, and it is a mortise device, so it needs a mortise strike prepped into the frame jamb, not a rim strike on the face. A frame previously carrying a rim exit device or a vertical rod device will not have the right prep. Confirm your jamb has a mortise lock pocket and strike cutout before you order.
5) What trim functions can I order on the Von Duprin 55 Series mortise device, and which one do I need for a classroom door?
Six trim functions are orderable: DT dummy trim, EO exit only, L lever, L-BE lever with blank escutcheon, L-DT lever with dummy trim, and NL night latch. Exit only gives you no outside operation at all. Night latch gives key retraction from outside, which is the usual choice on a back or service door. For a classroom or an office you want a lever trim so the door can be used as an entrance, and lever style is a separate selection: 06 (the default on L trim), 03, 07 or 17.
6) My door is a wide stile wood or hollow metal door. What mortise exit device takes the place of the Von Duprin 5575?
The 5575-4ft is a narrow stile device, so on a wide stile wood or hollow metal door the wide stile mortise devices are the fit. The Adams Rite 8300 Series is a Grade 1 wide stile life safety mortise exit device for wood and hollow metal doors, the Adams Rite 3300 Series is the Grade 1 fire rated wide stile equivalent for the same door types, and the Corbin Russwin ED5600AL is a Grade 1 three hour fire rated wide stile mortise device for 1-3/4 inch doors that accepts passage or classroom lever trim. Choose between them on whether the opening is labeled and on which trim functions you need.
7) Which narrow stile mortise exit device should I use on an aluminum storefront door instead of the Von Duprin 5575?
The Adams Rite 8400 Series is a Grade 1 narrow stile mortise exit device built specifically for aluminum doors, and it is a life safety device rather than a fire rated one. The Von Duprin 5575-4ft is also narrow stile and Grade 1, in a 48 inch crossbar style with a 3-3/4 inch projection, so both suit a narrow stile opening; the difference is that the 5575 is a crossbar device with a field reversible mortise lock, while the 8400 is the Adams Rite aluminum door platform. If the specification calls out an Adams Rite aluminum door device, the 8400 is the direct match.
8) What is the closest narrow stile mortise exit device to the Von Duprin 5575 if I need one that is fire rated?
The Von Duprin 5575-4ft carries a Grade 1 rating but is not a fire rated device, so it belongs on a non-fire opening. For a narrow stile mortise exit device on a labeled opening, the Sargent 8304 is a Grade 1 narrow stile mortise device in the 8300 Series with a night latch function, and the Adams Rite 3300 Series is a Grade 1 fire rated mortise exit device for wood and hollow metal doors, though the 3300 is a wide stile device. Match the stile width to the door first: aluminum storefront and other narrow stile doors will not take a wide stile device.
9) I need a night latch mortise exit device. How does the Von Duprin 5575 NL compare to the Sargent night latch devices?
The 5575-4ft is available in an NL night latch trim function on a narrow stile Grade 1 crossbar device that is field reversible. The Sargent 8304 is a Grade 1 narrow stile mortise exit device dedicated to the night latch function in the 8300 Series, and the Sargent 8904 is the Grade 1 wide stile night latch mortise device in the 8900 Series with 24VAC/DC operation. Pick the 8904 only if the door is wide stile and you want the powered version; for a narrow stile opening the 5575 NL and the 8304 both apply.
10) Can the Sargent 1256NB-8710G replace a Von Duprin 5575 on the same door?
No, they latch differently. The Sargent 1256NB-8710G is a Grade 1 narrow stile device, but it is an 84 inch fire rated surface mount vertical rod exit device with electric latch retraction, so it latches top and bottom through rods rather than into a mortise strike in the jamb. The Von Duprin 5575-4ft is a mortise exit device with a 1/2 inch latch throw in a 48 inch crossbar, prepped for a mortise lock pocket in the door edge. The two need different door preps and different strikes, so one does not drop into the other opening.
11) Should I use a mortise exit device or a vertical rod device on my doors?
A mortise device like the 5575 latches into the jamb, which suits a single door or the active leaf of a pair with a mullion, and it keeps the hardware off the head and threshold. Within the 55 Series the alternatives are type 27 rim with surface vertical rods and type 47 concealed vertical rods, which latch top and bottom and are what you want on a pair with no center mullion. Vertical rods also matter where the frame cannot be prepped for a mortise lock pocket.
12) Can I add request-to-exit monitoring to the Von Duprin 5575 for my access control system?
RX request to exit is an orderable option on the 5575, so the switch is factory fitted rather than added later. Ordered with a switch, the device reports when someone pushes the crossbar, which is what an access control panel needs to shunt the alarm on a legitimate exit. The 55 Series also takes the E8875 electrified option for access control or fire alarm integration, plus power transfers.
13) Can the Von Duprin 5575 be held unlocked during business hours?
Hex key dogging is standard on the 5575, so a maintenance tech depresses the crossbar and locks it down with a hex key to leave the door push-pull through open hours, then undogs it at close. Dogging is only available because this is a non fire rated device; fire rated exit devices cannot be mechanically dogged.
14) Is the Von Duprin 55 Series Grade 1, and what testing does it meet?
The 5575 is certified to ANSI/BHMA A156.3, 2008 Grade 1, the top durability grade for exit devices, and it is UL listed for accident hazard installations under ANSI/UL 305 and CAN/ULC-S132. That is the grade a facility spec normally calls for on stairwells, corridors and other high traffic egress doors.
15) Can I put the Von Duprin 5575 on a wood door?
Yes, with the 589 cover plate, which is required on wood door installations. The included screw pack covers metal and wood doors at 1-1/4 inch and 2-1/4 inch thicknesses. If your opening is aluminum storefront rather than wood, no cover plate is involved. Worth knowing when comparing: the Detex 30 Series mortise device is not wood door compatible at all.
16) I only need a push to exit device with no outside trim. Is there a simpler option than the Von Duprin 5575?
Yes. The 5575-4ft is offered in an exit only trim function alongside lever, night latch, dummy and blank escutcheon versions, so it can be ordered exit only, but several peers are built only for that duty. The Falcon 25-M-EO is a Grade 1 wide stile mortise exit device in a 36 inch length with an exit only function for 1-3/4 inch doors, the Detex 30 Series Advantex is a Grade 1 wide stile mortise device supplied as device only exit only and is not rated for wood doors, and the BEST Precision 2301 Series is an exit only mortise device with heavy wrought construction. All three are wide stile, so they suit a wood or hollow metal opening rather than a narrow stile one.
17) Is the Sargent 810 an alternative to a Von Duprin 5575 dummy trim device?
They are not the same class of part. The Sargent 810 is a Grade 1 dummy pull exit device trim in the PE80 Series, meaning it is trim only with a dummy function and no exit mechanism behind it. The Von Duprin 5575-4ft in the DT dummy trim or L-DT lever dummy trim configuration is a complete 48 inch crossbar mortise exit device carrying that trim. Order the 810 when you are dressing an inactive leaf or matching an existing Sargent device, and the 5575 when the opening needs the device itself.
18) Which mortise exit device works on a wood door if the Detex 30 does not?
The Detex 30 Series Advantex is a Grade 1 wide stile mortise device that is not wood door compatible, so it is limited to metal openings. The Von Duprin 5575-4ft ships with a screw pack for 1-1/4 inch and 2-1/4 inch thick metal and wood doors and takes the 589 cover plate on wood doors. Among the wide stile peers, the Adams Rite 8300 Series and the fire rated Adams Rite 3300 Series are both built for wood and hollow metal doors.
19) I need a shorter mortise exit device than 4 feet. What are my options?
The Von Duprin 5575-4ft is a 48 inch device that is field sizeable, so it can be cut down on site for a narrower opening. If you would rather order the shorter length outright, the Falcon 25-M-EO is a Grade 1 mortise exit device supplied at 36 inches, though it is a wide stile exit only device for 1-3/4 inch doors and will not fit a narrow stile aluminum opening.
20) For a classroom or passage lever function on a mortise exit device, what compares to the Von Duprin 5575?
The 5575-4ft is ordered with lever trim in L, L-BE and L-DT configurations with a choice of 03, 06, 07 and 17 lever styles, and the device itself is field reversible so the handing can be changed without pulling the mortise lock. The Corbin Russwin ED5600AL is a Grade 1 mortise exit device for 1-3/4 inch doors that accepts passage or classroom lever trim, but the trim is not included with it and it is a wide stile device. On a narrow stile door the 5575 with lever trim is the one that fits.
21) What crossbar options are there on the Von Duprin 5575, and what is the knurled one for?
Three crossbars: standard, RCB reinforced, and KN knurled. Knurling is a tactile warning surface, used where code or an owner standard calls for hazard identification on a door people should not walk through blind. The reinforced crossbar is the choice on abused openings like school corridors and loading areas.
22) What finishes does the Von Duprin 5575 come in for matching the rest of my building?
Eight finishes are available on the 5575: 605 bright brass, 606 satin brass, 612 satin bronze, 613 oil rubbed bronze, 625 bright chrome, 626 satin chrome, 643E aged bronze, and 693 black. 626 satin chrome is the usual commercial standard, and 613 or 643E are the ones to pick when the rest of the openings are on a bronze package.
23) How much does the crossbar stick out into the corridor?
Projection on the 5575 is 3-3/4 inch from the door face. That is the number to check against a clear corridor width, a door swinging into a return wall, or a pair of leaves where two devices could meet. Each end case measures 7-1/4 x 1-1/4 x 2-1/4 inches.
How fast can I get the Von Duprin 5575EO-US4-4 delivered?
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Can I return it if it doesn’t work for me?
Yes—ZenSupply offers a hassle-free return policy. If the product isn’t the right fit, reach out to our support team for a return authorization or setup a return by following our return instructions.
Does the Von Duprin 5575EO-US4-4 come with a warranty?
Absolutely. The Von Duprin 5575EO-US4-4 is backed by a manufacturer’s warranty. For full warranty terms, check the product documentation or Contact Us.
How do I get technical support or installation help for the Von Duprin 5575EO-US4-4?
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