PDQ 639001-RF Fire Rated Head ...
IN STOCK (leaves warehouse same day if ordered before 3pm ET)
$164.14
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PDQ 639001-RF Fire Rated Head Chassis, Rim, Wide Stile (replacement only)

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Model: 639001RF

In Stock (leaves warehouse same day if ordered before 3pm ET)

$164.14
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PDQ 639001-RF Fire Rated Head Chassis, Rim, Wide Stile (replacement only)

Replacement Parts for PDQ 6300 and 6400 Series Exit Devices

PDQ part number 639001-RF: Fire Rated Head Chassis, Rim, Wide Stile (replacement only). A genuine PDQ part.

These are factory replacement and conversion parts for PDQ 6300 Series wide stile and 6400 Series narrow stile exit devices, covering rim, surface vertical rod, concealed vertical rod and mortise configurations. The range includes head chassis assemblies, latchbolts, rods and connectors, push bars, covers and end caps, strikes and shims, dogging and alarm conversion kits, screwpacks and signal switches, so an existing device can be serviced or upgraded without replacing the whole unit.

Key Features

  • Genuine PDQ parts for 6300 Series wide stile and 6400 Series narrow stile exit devices
  • Covers rim, surface vertical rod, concealed vertical rod and mortise device configurations
  • Panic rated and fire rated head chassis available for replacement
  • Conversion kits add cylinder dogging or an alarm to an installed device
  • Strikes, shims, drill guides and screwpacks for installation and adjustment

Technical Specifications

  • Manufacturer Part Number: 639001-RF

Manufacturer Resources

Product Specs

Department:
Door Hardware
Product Group:
Exit Devices and Trim
Product Subgroup:
Exit Device Housings and Covers
Product Type:
Case Assembly
Product Category:
Parts and Accessories
Product Model:
639001-RF
Commercial/Residential:
Commercial
Tags:
pdq 639001-rf, 639001-rf pdq, 639001-rf
Subcategory:
Parts and Accessories
Parts and Accessories Type:
Chassis
Series:
6300 Series

PDQ 639001RF – Frequently Asked Questions

1) What exactly is the PDQ 639001-RF part?
It's a genuine PDQ fire rated head chassis for a rim-type exit device in the wide stile configuration, part number 639001-RF. The head chassis is the center mechanism the push bar acts on, and this one is sold as a replacement component only, not as a complete exit device. If you need a whole device rather than the internal chassis, order the complete 6300 Series unit instead.
2) Which PDQ exit devices does the 639001-RF head chassis fit?
It is a 6300 Series part, which is PDQ's wide stile exit device line. The replacement parts program covers both the 6300 Series wide stile and the 6400 Series narrow stile devices, but this chassis is the wide stile rim version, so it is not the part for a 6400 narrow stile device. For a narrow stile device you need the corresponding 6400 narrow stile chassis.
3) Can I use the 639001-RF on a surface vertical rod or mortise exit device?
No. The 639001-RF is the rim configuration chassis. PDQ's 6300/6400 parts range covers rim, surface vertical rod, concealed vertical rod and mortise configurations as separate parts, so a surface vertical rod, concealed vertical rod or mortise device takes its own matching head chassis. Confirm which configuration is on the door before ordering, since the chassis is not interchangeable across them.
4) Do I need the fire rated chassis or the panic rated one?
PDQ offers both panic rated and fire rated head chassis as replacement items, and the 639001-RF is the fire rated version. On a labeled fire door opening you must keep the device fire rated, which means no mechanical dogging, so the fire rated chassis is the one to use. On a non-labeled exit opening where you want the push bar to be held down for daytime free passage, the panic rated chassis is the correct part.
5) Can I repair a worn PDQ exit device instead of replacing the whole unit?
Yes, that's the point of this parts program. PDQ supplies factory replacement and conversion parts for the 6300 and 6400 Series, including head chassis assemblies, latchbolts, rods and connectors, push bars, covers and end caps, strikes and shims, dogging and alarm conversion kits, screwpacks and signal switches, so an installed device can be serviced or upgraded in place. For a property manager standardizing on PDQ across a building, that keeps existing door prep and trim untouched.
6) Does the 639001-RF chassis come with mounting screws?
The chassis is sold as the replacement mechanism. PDQ lists screwpacks separately within the 6300/6400 replacement parts range, along with strikes, shims and drill guides for installation and adjustment, so add the screwpack if your existing fasteners are missing or stripped.
7) Can I add cylinder dogging or an alarm to an existing PDQ 6300 device?
Yes, PDQ offers conversion kits that add cylinder dogging or an alarm to an already installed 6300 or 6400 Series device. Note that cylinder dogging is for panic rated openings, not fire rated ones, so if you're working with the fire rated 639001-RF chassis the dogging conversion is not the right path for that door.
8) Is the 639001-RF a genuine PDQ part or an aftermarket copy?
It's a genuine PDQ factory part, catalogued by the manufacturer as 639001-RF. That matters on a fire rated opening, because substituting non-factory internals on a labeled device can void the listing of the assembly.
9) Is the PDQ 6300 exit device chassis suitable for residential doors?
It's a commercial part. The 639001-RF is a door hardware component for commercial exit devices on egress openings, the kind used in schools, healthcare, hospitality and multi-family common areas. Residential entry doors don't typically carry a panic device at all.
How fast can I get the PDQ 639001RF delivered?
Most orders ship the same day from our distribution partners, with quick delivery throughout the continental U.S. Need it urgently? Contact Us for expedited shipping options.
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 PDQ 639001RF come with a warranty?
Absolutely. The PDQ 639001RF 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 PDQ 639001RF?
You can call, text, or email our expert support team for fast answers. We’re here to help with product selection, installation tips, and troubleshooting. Contact Us
Why buy the PDQ 639001RF from ZenSupply?
ZenSupply makes it easy to get the commercial door hardware you need—fast shipping, expert support, and rewards on every order. Our team is always ready to help you choose the right product for your project.
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