Vaculine Exhaust Vent Door for MD Central Vacuum – Part# 518
- Product SKU: 518
- Category: Central Vacuum Parts & Accessories, MD Central Vacuum Attachment Kit
- Order within
Quick Summary
This exhaust vent door installs on the outside of the home to exhaust the power unit. It fits 2-inch OD vacuum PVC pipe and is used with many central vacuum brands, including MD central vacuum systems.
Available from Ace Vacuums, with help matching parts to your MD central vacuum system at our Fairfax and Leesburg, VA showrooms.
Quick Highlights
- Installs on the outside of the home
- Exhausts the power unit
- Fits 2-inch OD vacuum PVC pipe
- Overall size is 3-5/8 in. W x 4-5/8 in. H
- Door flap distance is 2 3/4 in.
- Not needed with M.D. bag type units
Product Overview
This exhaust vent door is designed for central vacuum exhaust applications and installs on the exterior of the home. It connects to 2-inch OD vacuum PVC pipe and provides an outlet for the power unit exhaust.
According to the product record, this part is not needed with M.D. bag type units. It is listed as compatible with a wide range of central vacuum brands, including MD central vacuum systems.
Key Features
- Exterior installation: Made to be installed on the outside of the home for central vacuum exhaust.
- Power unit exhaust use: Provides an exhaust outlet for the central vacuum power unit.
- Fits standard vacuum pipe size: Designed to fit 2-inch OD vacuum PVC pipe.
- Compact overall size: The overall size is 3-5/8 inches wide by 4-5/8 inches high.
- Door flap measurement: The distance on the door flap is 2 3/4 inches.
- Broad brand compatibility: Listed for use with AirMaster, Modern Day, SilentMaster, Flo-Master, Beam, Nutone, Electrolux, Vacuflo, Kenmore, and Eureka.
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 | 518 |
| Fits Pipe Size | 2 in. OD vacuum PVC pipe |
| Overall Size | 3-5/8 in. W x 4-5/8 in. H |
| Door Flap Distance | 2 3/4 in. |
| Installation Location | Outside of the home |
| Compatibility Note | AirMaster, Modern Day, SilentMaster, Flo-Master, Beam, Nutone, Electrolux, Vacuflo, Kenmore and Eureka |
| MD Note | Not needed with M.D. bag type units |
| Authorized Dealer | Ace Vacuums |
Best For
- Replacing an exterior central vacuum exhaust vent door
- Installations using 2-inch OD vacuum PVC pipe
- MD central vacuum systems that vent outside
- Cross-brand central vacuum exhaust applications
Not Ideal For
- M.D. bag type units
- Applications that do not use 2-inch OD vacuum PVC pipe
- Shoppers who need a model-specific fit confirmation before ordering
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 Exhaust Vent Door 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 exhaust vent door installs on the outside of the home to exhaust the power unit. It fits 2-inch OD vacuum PVC pipe and is used with many central vacuum brands, including MD central vacuum systems.
Available from Ace Vacuums, with help matching parts to your MD central vacuum system at our Fairfax and Leesburg, VA showrooms.
Quick Highlights
- Installs on the outside of the home
- Exhausts the power unit
- Fits 2-inch OD vacuum PVC pipe
- Overall size is 3-5/8 in. W x 4-5/8 in. H
- Door flap distance is 2 3/4 in.
- Not needed with M.D. bag type units
Product Overview
This exhaust vent door is designed for central vacuum exhaust applications and installs on the exterior of the home. It connects to 2-inch OD vacuum PVC pipe and provides an outlet for the power unit exhaust.
According to the product record, this part is not needed with M.D. bag type units. It is listed as compatible with a wide range of central vacuum brands, including MD central vacuum systems.
Key Features
- Exterior installation: Made to be installed on the outside of the home for central vacuum exhaust.
- Power unit exhaust use: Provides an exhaust outlet for the central vacuum power unit.
- Fits standard vacuum pipe size: Designed to fit 2-inch OD vacuum PVC pipe.
- Compact overall size: The overall size is 3-5/8 inches wide by 4-5/8 inches high.
- Door flap measurement: The distance on the door flap is 2 3/4 inches.
- Broad brand compatibility: Listed for use with AirMaster, Modern Day, SilentMaster, Flo-Master, Beam, Nutone, Electrolux, Vacuflo, Kenmore, and Eureka.
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 | 518 |
| Fits Pipe Size | 2 in. OD vacuum PVC pipe |
| Overall Size | 3-5/8 in. W x 4-5/8 in. H |
| Door Flap Distance | 2 3/4 in. |
| Installation Location | Outside of the home |
| Compatibility Note | AirMaster, Modern Day, SilentMaster, Flo-Master, Beam, Nutone, Electrolux, Vacuflo, Kenmore and Eureka |
| MD Note | Not needed with M.D. bag type units |
| Authorized Dealer | Ace Vacuums |
Best For
- Replacing an exterior central vacuum exhaust vent door
- Installations using 2-inch OD vacuum PVC pipe
- MD central vacuum systems that vent outside
- Cross-brand central vacuum exhaust applications
Not Ideal For
- M.D. bag type units
- Applications that do not use 2-inch OD vacuum PVC pipe
- Shoppers who need a model-specific fit confirmation before ordering
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 Exhaust Vent Door 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 does this exhaust vent door do?
It installs on the outside of the home to exhaust the central vacuum power unit.
What pipe size does it fit?
It fits 2-inch OD vacuum PVC pipe.
What are the dimensions of this vent door?
The overall size is 3-5/8 inches wide by 4-5/8 inches high.
What is the door flap distance?
The distance on the door flap is 2 3/4 inches.
Is this needed for every MD central vacuum system?
No. The product record states that it is not needed with M.D. bag type units.
Is this compatible with MD central vacuum?
It is listed with Modern Day compatibility, so it may fit MD central vacuum applications. If you are not sure, confirm your MD model and pipe size before ordering.
What other brands is this vent door listed for?
The compatibility note includes AirMaster, Modern Day, SilentMaster, Flo-Master, Beam, Nutone, Electrolux, Vacuflo, Kenmore, and Eureka.
Is there a case quantity mentioned?
Yes. The record states that if you need a case, enter 40 for the quantity.
Visit Our Showrooms
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📍 AceVacuums Fairfax (DMV Hub)
Address: 11110 Main St, Fairfax, VA 22030
Landmark: Opposite Havertys Furniture Store
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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
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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