2 x 6 Inch Firewall Steel for MD Central Vacuum – Part# 523S

2 x 6 Inch Firewall Steel for MD Central Vacuum – Part# 523S

Available: In Stock
$38.53
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Quick Summary

This 2 x 6 inch firewall steel is used in new construction when the pipe line penetrates a fire barrier wall, such as in a garage. It connects to standard vacuum PVC piping using rubber cement and couplings.

Available from Authorized MD Dealer Ace Vacuums, with help matching parts to your MD central vacuum system at our Fairfax and Leesburg, VA showrooms.

Quick Highlights

  • 2 x 6 inch firewall steel
  • For new construction use
  • Used where pipe passes through a fire barrier wall
  • Example application: garages
  • Connects to standard vacuum PVC piping
  • Part number 523S

Product Overview

This firewall steel is intended for new construction installations where a central vacuum pipe line passes through a fire barrier wall. A common example is a garage wall application.

It is designed to be connected to standard vacuum PVC piping. Use rubber cement and couplings to complete the connection.

This part is listed on Parts for Modern Day pages and is sold for MD central vacuum system installations.


Key Features

  • Fire barrier application: Made for situations where the pipe line penetrates a fire barrier wall.
  • Sized 2 x 6 inch: This part is identified as a 2 x 6 inch firewall steel.
  • For new construction: Intended for use during new construction installations.
  • PVC pipe connection: Connects to standard vacuum PVC piping with rubber cement and couplings.
  • Garage example: A typical use case is where piping passes through a garage fire barrier wall.

MD Compatibility

This product is listed for MD (Modern Day) central vacuum systems. Fit can depend on your hose, inlet type and system age, so confirm your setup before ordering or call Ace Vacuums for help.


Technical Specifications

Specification Details
Brand MD
Product Type Firewall steel
Size 2 x 6 inch
Part Number 523S
Recommended Use New construction
Connection Method Use rubber cement and couplings to connect to standard vacuum PVC piping
Compatibility Note Includes AirMaster, Modern Day, SilentMaster, Flo-Master, Beam, Nutone, Electrolux, Vacuflo, Kenmore and Eureka
Authorized Dealer Ace Vacuums

Best For

  • New construction central vacuum installations
  • Pipe runs that penetrate a fire barrier wall
  • Garage wall applications
  • Connecting to standard vacuum PVC piping

Not Ideal For

  • Projects where rubber cement and couplings are not available
  • Installations where compatibility needs confirmation before ordering
  • Applications outside the stated fire barrier wall use

Why Buy from Ace Vacuums

When you purchase from Authorized MD Dealer Ace Vacuums, you receive:

  • Central vacuum parts matched to your MD system
  • Help choosing the right hose, tools and inlet parts
  • Knowledgeable support before and after the sale
  • Shipping or pickup at our Fairfax and Leesburg showrooms

Available Online & In-Store

The 2 x 6 Inch Firewall Steel for MD Central Vacuum is available online and in-store through Authorized MD Dealer Ace Vacuums.

Visit Our Showrooms

  • Fairfax, VA: 11110 Main St, Fairfax, VA 22030
  • Leesburg, VA: 300 Fort Evans Rd NE, Leesburg, VA 20176

Call 703-997-9292 (ext. 1 Fairfax, ext. 2 Leesburg).


Quick Summary

This 2 x 6 inch firewall steel is used in new construction when the pipe line penetrates a fire barrier wall, such as in a garage. It connects to standard vacuum PVC piping using rubber cement and couplings.

Available from Authorized MD Dealer Ace Vacuums, with help matching parts to your MD central vacuum system at our Fairfax and Leesburg, VA showrooms.

Quick Highlights

  • 2 x 6 inch firewall steel
  • For new construction use
  • Used where pipe passes through a fire barrier wall
  • Example application: garages
  • Connects to standard vacuum PVC piping
  • Part number 523S

Product Overview

This firewall steel is intended for new construction installations where a central vacuum pipe line passes through a fire barrier wall. A common example is a garage wall application.

It is designed to be connected to standard vacuum PVC piping. Use rubber cement and couplings to complete the connection.

This part is listed on Parts for Modern Day pages and is sold for MD central vacuum system installations.


Key Features

  • Fire barrier application: Made for situations where the pipe line penetrates a fire barrier wall.
  • Sized 2 x 6 inch: This part is identified as a 2 x 6 inch firewall steel.
  • For new construction: Intended for use during new construction installations.
  • PVC pipe connection: Connects to standard vacuum PVC piping with rubber cement and couplings.
  • Garage example: A typical use case is where piping passes through a garage fire barrier wall.

MD Compatibility

This product is listed for MD (Modern Day) central vacuum systems. Fit can depend on your hose, inlet type and system age, so confirm your setup before ordering or call Ace Vacuums for help.


Technical Specifications

Specification Details
Brand MD
Product Type Firewall steel
Size 2 x 6 inch
Part Number 523S
Recommended Use New construction
Connection Method Use rubber cement and couplings to connect to standard vacuum PVC piping
Compatibility Note Includes AirMaster, Modern Day, SilentMaster, Flo-Master, Beam, Nutone, Electrolux, Vacuflo, Kenmore and Eureka
Authorized Dealer Ace Vacuums

Best For

  • New construction central vacuum installations
  • Pipe runs that penetrate a fire barrier wall
  • Garage wall applications
  • Connecting to standard vacuum PVC piping

Not Ideal For

  • Projects where rubber cement and couplings are not available
  • Installations where compatibility needs confirmation before ordering
  • Applications outside the stated fire barrier wall use

Why Buy from Ace Vacuums

When you purchase from Authorized MD Dealer Ace Vacuums, you receive:

  • Central vacuum parts matched to your MD system
  • Help choosing the right hose, tools and inlet parts
  • Knowledgeable support before and after the sale
  • Shipping or pickup at our Fairfax and Leesburg showrooms

Available Online & In-Store

The 2 x 6 Inch Firewall Steel for MD Central Vacuum is available online and in-store through Authorized MD Dealer Ace Vacuums.

Visit Our Showrooms

  • Fairfax, VA: 11110 Main St, Fairfax, VA 22030
  • Leesburg, VA: 300 Fort Evans Rd NE, Leesburg, VA 20176

Call 703-997-9292 (ext. 1 Fairfax, ext. 2 Leesburg).


Frequently Asked Questions

What is this part used for?

It is used in new construction when the pipe line penetrates a fire barrier wall, such as in a garage.

What size is this firewall steel?

It is a 2 x 6 inch firewall steel.

How does it connect to the piping?

Use rubber cement and couplings to connect it to standard vacuum PVC piping.

Is this for new construction or retrofit work?

The record specifically states it is for new construction.

Will this work with MD central vacuum?

This part is sold for MD central vacuum applications. If you are not sure about fit in your installation, confirm your MD central vacuum model and installation details before ordering.

What brands are included in the compatibility note?

The compatibility note includes AirMaster, Modern Day, SilentMaster, Flo-Master, Beam, Nutone, Electrolux, Vacuflo, Kenmore and Eureka.

What is the part number?

The part number is 523S.

Visit Our Showrooms

Check real-time traffic and travel time from your location in VA, DC, or MD.

📍 AceVacuums Fairfax (DMV Hub)

Address: 11110 Main St, Fairfax, VA 22030
Landmark: Opposite Havertys Furniture Store
Best for: Bethesda, Potomac, Arlington, NW Washington D.C.

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📍 AceVacuums Leesburg

Address: 300 Fort Evans Rd NE, Suite 104, Leesburg, VA 20176
Landmark: Next to Home Depot in Leesburg
Best for: Ashburn, Sterling, Frederick MD, Loudoun County

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Shipping, Return & Refund Policy

Shipping Policy

In-stock merchandise generally ships from our Leesburg, Virginia location within 3–5 business days. Processing time is separate from carrier transit time and is not a guaranteed delivery date. Weekends and holidays can affect timing. Special-order, backordered or unavailable items may take longer; contact us to confirm timing before purchase when a deadline matters.

Shipping options and charges are shown at checkout. After dispatch, follow the carrier's tracking updates. Weather, carrier delays, order verification and inventory confirmation may affect delivery. Inspect packages promptly and retain packaging if there is damage or an incorrect or missing item.

Returns and refunds

Eligible unused items have a 30-calendar-day return request window for refunds or exchanges, measured from delivery or in-store purchase. Return authorization is required. Final-sale exclusions, the 15% restocking fee for change-of-mind returns and shipping responsibilities are explained in our Return and Refund Policy. That policy is the governing source for return eligibility and fees.

For shipping or return help, email sales@acevacuums.com or call 703-997-9292.


30-Day Returns, Refunds and Exchanges

Updated September 27, 2026. Request a return for an eligible unused item within 30 calendar days of delivery (or purchase for items collected in store). Eligible returns may be refunded to the original payment method or exchanged, subject to availability. The same 30-day request window applies to both refunds and exchanges; there is no separate seven-day or 15-day refund deadline.

Eligibility and authorization

Items must be unused, clean, complete and in their original packaging with all accessories, manuals and proof of purchase. Contact sales@acevacuums.com or 703-997-9292 before sending anything back. Include your order number, item and reason for return. We will confirm eligibility, charges and return instructions. Unapproved or cash-on-delivery returns are not accepted.

Fees and shipping

For an approved change-of-mind return, a 15% restocking fee applies to the returned merchandise price. Original shipping charges are not refundable and the customer pays return shipping. These charges do not apply to an approved return caused by our shipping error or a damaged/defective item claim. Contact us first so we can arrange the appropriate remedy and shipping instructions. Do not assume a prepaid label is included.

Final-sale and excluded items

Air purifiers; discounted, clearance, trade-in, holiday-sale and price-matched purchases; gift cards; custom or special-order products; electrical parts; used or installed items; opened cleaning solutions; and used bags, filters, belts or other consumables are not eligible for change-of-mind returns. Other items clearly marked final sale at purchase are also excluded. An opened box alone does not disqualify an otherwise eligible unused, complete item, but consumables and cleaning solutions must remain unopened.

Damaged, defective, incorrect or missing items; recalls

Inspect your order promptly and contact us as soon as you discover a problem, with your order number and photos where helpful. Keep the packaging. Change-of-mind exclusions and deadlines do not remove applicable defect, warranty, recall or statutory rights. Warranty coverage requires evaluation under the manufacturer's terms; dealer status does not guarantee free repair. Recalled products must follow the manufacturer's recall process.

Refund timing and exchanges

After we receive and inspect the return, we will notify you of approval or the reason it cannot be accepted. Approved refunds are issued to the original payment method within 10 business days of approval; your bank may take additional time to post them. Contact us if more than 15 business days have passed since approval. Exchanges require authorization and replacement availability; any price difference and applicable charges will be explained before processing.

Applicable rights and earlier purchases

This policy applies to online and in-store purchases. We will honor more favorable written return terms provided with an earlier purchase. Applicable consumer rights remain unaffected. Where the European Union 14-day cancellation right applies, customers may cancel or return eligible orders within 14 days of receipt, subject to applicable legal exceptions, without giving a reason.


The DMV’s Trusted Vacuum Service Authority

For 25+ years, Ace Vacuums has filled the gap left by big-box retailers. We provide the expert repairs, warranty support, and genuine OEM parts that Amazon and Walmart simply don't offer. From free estimates to same-day service, we are your local alternative for professional home care solutions.

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Conveniently serving Washington D.C. and Maryland (Montgomery & Prince George's Counties). Our showrooms are just 20 minutes from DC and 10 minutes from Tysons Corner.

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Serving Zip Codes: 20147, 20176, 22030, 22031, 20151, 20190, 22102, 22314, 20110, 20148 & surrounding areas. All repairs performed by certified technicians using genuine parts.