Vaculine 3-in-1 PVC Mounting Bracket for MD Central Vacuum – Part# 517
- Product SKU: 517
- Category: Central Vacuum Parts & Accessories, MD Central Vacuum Attachment Kit
- Order within
Quick Summary
This 3-in-1 PVC mounting bracket is used with rectangle-shaped basic inlet valve covers. It can be installed in new construction or adapted for existing home installation.
Available from Ace Vacuums, with help matching parts to your MD central vacuum system at our Fairfax and Leesburg, VA showrooms.
Quick Highlights
- Fits rectangle-shaped basic inlet valve covers
- For new construction or existing home installation
- Mounts by nailing or screwing into a stud
- Can be trimmed for retrofit drywall installation
- Helps provide a firm hold for the inlet cover
- Part number 517
Product Overview
This mounting bracket is a popular choice for rectangle-shaped basic inlet valve covers. In new construction, it installs by nailing or screwing into a stud.
For existing home installation, the plastic stud mounting side can be cut off and the bracket set into a 2-3/8" x 4-1/4" hole cut into drywall or similar wall material. The inlet cover, with attached low voltage wire, fastens to the backing plate for a firm, long-lasting hold.
When piping, connect a fitting such as a tight 90 or coupling to the flange on the back side of the mounting bracket. For existing installation, it can be helpful to glue the fitting on before mounting it with the vacuum plate to the wall.
Key Features
- Rectangle inlet cover fit: Designed for use with rectangle-shaped basic inlet valve covers.
- New construction installation: Can be installed during new construction by nailing or screwing it into a stud.
- Existing home retrofit: Can be adapted for existing installations by cutting off the plastic stud mounting side.
- Drywall opening guidance: For existing installation, it fits into a 2-3/8" x 4-1/4" hole cut into drywall or similar wall material.
- Firm inlet support: The inlet cover fastens to the backing plate for a long-lasting, firm hold.
- Rear flange connection: A fitting such as a tight 90 or coupling connects to the flange on the back side of the bracket.
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 | Vaculine |
| Part number | 517 |
| Product type | 3-in-1 PVC mounting bracket |
| Installation use | New construction or existing home installation |
| Wall opening for existing installation | 2-3/8" x 4-1/4" |
| Compatibility | AirMaster, Modern Day, SilentMaster, Flo-Master, Beam, Nutone, Electrolux, Vacuflo, Kenmore and Eureka |
| Fits | Rectangle-shaped basic inlet valve covers |
| Authorized Dealer | Ace Vacuums |
Best For
- Installing rectangle-shaped basic inlet valve covers
- New construction central vacuum rough-in work
- Retrofitting an inlet in an existing wall
- Securing an inlet cover with low voltage wire
Not Ideal For
- Round inlet valve covers
- Shoppers who have not confirmed their inlet style
- Installations needing fittings that are not included
Why Buy from Ace Vacuums
When you purchase from 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 Vaculine 3-in-1 PVC Mounting Bracket for MD Central Vacuum is available online and in-store through 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 3-in-1 PVC mounting bracket is used with rectangle-shaped basic inlet valve covers. It can be installed in new construction or adapted for existing home installation.
Available from Ace Vacuums, with help matching parts to your MD central vacuum system at our Fairfax and Leesburg, VA showrooms.
Quick Highlights
- Fits rectangle-shaped basic inlet valve covers
- For new construction or existing home installation
- Mounts by nailing or screwing into a stud
- Can be trimmed for retrofit drywall installation
- Helps provide a firm hold for the inlet cover
- Part number 517
Product Overview
This mounting bracket is a popular choice for rectangle-shaped basic inlet valve covers. In new construction, it installs by nailing or screwing into a stud.
For existing home installation, the plastic stud mounting side can be cut off and the bracket set into a 2-3/8" x 4-1/4" hole cut into drywall or similar wall material. The inlet cover, with attached low voltage wire, fastens to the backing plate for a firm, long-lasting hold.
When piping, connect a fitting such as a tight 90 or coupling to the flange on the back side of the mounting bracket. For existing installation, it can be helpful to glue the fitting on before mounting it with the vacuum plate to the wall.
Key Features
- Rectangle inlet cover fit: Designed for use with rectangle-shaped basic inlet valve covers.
- New construction installation: Can be installed during new construction by nailing or screwing it into a stud.
- Existing home retrofit: Can be adapted for existing installations by cutting off the plastic stud mounting side.
- Drywall opening guidance: For existing installation, it fits into a 2-3/8" x 4-1/4" hole cut into drywall or similar wall material.
- Firm inlet support: The inlet cover fastens to the backing plate for a long-lasting, firm hold.
- Rear flange connection: A fitting such as a tight 90 or coupling connects to the flange on the back side of the bracket.
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 | Vaculine |
| Part number | 517 |
| Product type | 3-in-1 PVC mounting bracket |
| Installation use | New construction or existing home installation |
| Wall opening for existing installation | 2-3/8" x 4-1/4" |
| Compatibility | AirMaster, Modern Day, SilentMaster, Flo-Master, Beam, Nutone, Electrolux, Vacuflo, Kenmore and Eureka |
| Fits | Rectangle-shaped basic inlet valve covers |
| Authorized Dealer | Ace Vacuums |
Best For
- Installing rectangle-shaped basic inlet valve covers
- New construction central vacuum rough-in work
- Retrofitting an inlet in an existing wall
- Securing an inlet cover with low voltage wire
Not Ideal For
- Round inlet valve covers
- Shoppers who have not confirmed their inlet style
- Installations needing fittings that are not included
Why Buy from Ace Vacuums
When you purchase from 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 Vaculine 3-in-1 PVC Mounting Bracket for MD Central Vacuum is available online and in-store through 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 bracket used for?
It is used to mount rectangle-shaped basic inlet valve covers.
Can this be used in new construction?
Yes. For new construction, it can be nailed or screwed into a stud.
Can this be used in an existing home installation?
Yes. For existing installation, the plastic stud mounting side can be cut off and the bracket set into a 2-3/8" x 4-1/4" hole cut into drywall or similar wall material.
What kind of fitting connects to the back of the bracket?
The description says to connect a fitting such as a tight 90 or coupling to the flange on the back side of the mounting bracket.
Should the fitting be glued on before mounting in an existing installation?
For existing installation, it can be helpful to glue the fitting on before mounting it with the vacuum plate to the wall.
Is this compatible with MD central vacuum systems?
This part is sold on Parts for Modern Day pages for MD central vacuum use, and the compatibility note also lists Modern Day along with several other brands. Because fit depends on the inlet type, confirm that you have a rectangle-shaped basic inlet valve cover before ordering.
Which other brands are listed in the compatibility note?
The compatibility note lists AirMaster, Modern Day, SilentMaster, Flo-Master, Beam, Nutone, Electrolux, Vacuflo, Kenmore and Eureka.
Visit Our Showrooms
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📍 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.
📍 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
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.
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