Swivel Mount Adapter: Narrow Baseplate + 1/2" Extension (Fits 3/4" Trim)
Add-On Baseplate for Adjustable Swivel Mounts
This is an **ADD-ON** part designed to work with our standard Adjustable Swivel Mounts (both 0-35° and 15-90° versions that use the standard ~1.8" wide base attachment).
Purpose: It allows installation on narrow trim (3/4" wide or more) AND adds a specific amount of forward extension.
Swivel Mount is NOT included - this listing is only for the narrow baseplate adapter piece.
Mount Your Swivel Mount on Narrow Trim & Add 7/8" Depth!
Is your door trim too narrow (but at least 3/4" wide) for our standard adjustable swivel mount base? This specialized baseplate adapter provides a slim 3/4" wide footprint to securely mount onto those narrow surfaces.
Additionally, this specific version provides a total of 7/8 inches of forward extension (1/2" straight + 3/8" transition) from the wall, useful for clearing shallow obstacles or achieving a specific projection.
Adapter Plate Dimensions
- Wall Contact Width: 3/4 inches (Requires trim/surface width of >= 3/4").
- Forward Extension (Straight Part): 1/2 inch.
- Transition Section Depth: Adds an additional 3/8 inch depth.
- Total Depth Added by THIS Adapter: 7/8 inch (1/2" + 3/8").
- Width at Swivel Mount Interface: Widens to 1.8 inches to match standard swivel base.
- Mounting Hole Spacing: 2-5/8 inches (center-to-center, standard - customizable on request).
Resulting Doorbell Position (Approximate)
When this 7/8" deep adapter plate is combined with one of our standard Adjustable Swivel Mounts, the final position of your doorbell will be approximately:
- Back of Doorbell Body: ~3-3/8 inches away from the wall/trim surface.
- Front Face of Doorbell: ~4-3/8 inches away from the wall/trim surface (assuming ~1" doorbell thickness).
(These are estimates; actual position depends on the specific swivel mount and doorbell model used.)
Key Features & Benefits:
- Add-on for Adjustable Swivel Mounts: Works with standard DoorbellMount.com swivel bases.
- Enables Narrow Trim Mounting: Fits securely on surfaces 3/4" wide or wider.
- Provides Fixed 7/8" Total Depth: Combines 1/2" extension + 3/8" transition.
- Clean Transition: Flares from 3/4" at the wall to 1.8" to seamlessly connect to the swivel base.
- Standard 2-5/8" Hole Spacing: Customizable upon request.
- Durable PETG Material: Strong, weather-resistant for outdoor use.
- Matches Mount Color: Produced in the same color as the main swivel mount ordered (Default Black).
- Other Lengths Available: Need a different extension length? Check our other narrow baseplate adapter listings.
How to Install (Adapter + Swivel Mount)
This baseplate fits between your wall/trim and your main swivel mount base.
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Tools & Prep: Gather Swivel Mount parts, this adapter, drill, PH2 screwdriver/bit, anchors (if needed), level.
Turn OFF power to doorbell wiring at the breaker!
- Align & Route Wires: Route wires first through this Narrow Baseplate Adapter, then through the standard Swivel Mount Base piece. Align the mounting holes (Narrow Baseplate against the wall, Swivel Base on top).
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Mount Combined Base: Position the combined bases on your 3/4" (or wider) trim/wall. Secure *both* pieces together to the wall using the #6 x 1-1/2" screws (provided with the main Swivel Mount) through the aligned 2-5/8" holes. Use appropriate anchors if needed.
Ensure alignment is correct before tightening. Use PH2 driver. Drill carefully, do not overtighten.
- Continue Swivel Mount Install: Proceed with the standard installation steps for your swivel mount (attach swivel bracket to base, set angle, wire doorbell, attach doorbell using mount-provided screws, finalize angle) as detailed in the main swivel mount instructions.
Always follow safety rules & doorbell wiring guidelines. Use appropriate anchors. The correct screwdriver size prevents stripping.
Product Visuals
(See listing photos or contact us for images!)
Questions About Compatibility or Customization?
Unsure if this adapter fits your swivel mount base or installation scenario? Need a different extension length (other lengths available as separate items) or custom hole spacing?
- Email: shop@doorbellmount.com (Send pictures!)
- Text/Call: 1-833-326-6868 (Text pictures!)
Color: This adapter will be printed in the same color selected for your main Adjustable Swivel Mount order (default is Black).
Add-On Only: This listing is for the narrow baseplate adapter with 1/2" extension ONLY (+3/8" transition = 7/8" total depth added). The Adjustable Swivel Mount must be purchased separately.
3D Printed Parts: Crafted using 3D printing (PETG). Minor cosmetic imperfections or layer lines may be present but do not impact strength or function. Contact us with any quality concerns.
Order this Narrow Baseplate Add-on today to install your swivel mount perfectly on 3/4" trim and add 7/8" total depth!
