1. Introduction and Overview
This manual provides comprehensive instructions for the proper installation, operation, and maintenance of your Solus S1721-BK Black Aluminum Wing Clip Post Top Fitter. This product is designed to securely mount globes and acorns with a 5.25-inch neckless opening onto a 3-inch post.

Image 1.1: Close-up view of the Solus S1721-BK Post Top Fitter, highlighting its internal components and design.
2. Product Features
- Versatile Design: Compatible with both globes and acorns featuring 5.25-inch neckless openings.
- Commercial Quality: Constructed from corrosion-resistant cast aluminum for enhanced durability and longevity.
- Easy Installation: Engineered for straightforward attachment to compatible globes/acorns and 3-inch posts.
- Corrosion Resistant: Features a powder-coated finish to resist environmental wear.
- Standard Post Fit: Designed specifically for use with 3-inch diameter posts.
3. Safety Information
Please read and understand all safety instructions before installing or maintaining the Solus S1721-BK Post Top Fitter. Failure to follow these instructions may result in electric shock, fire, or other hazards.
- Power Disconnection: Always disconnect the electrical power supply at the circuit breaker or fuse box before beginning any installation, maintenance, or repair work.
- Qualified Personnel: If you are unsure about wiring procedures, consult a qualified electrician.
- Secure Connections: Ensure all electrical connections are tight and properly insulated to prevent short circuits or electrical hazards.
- Safety Gear: Wear appropriate personal protective equipment, such as safety glasses and gloves, during installation.
- Product Compatibility: Use this fitter only with 3-inch posts and 5.25-inch neckless globes or acorns as specified.
4. Package Contents
Verify that all components are present before beginning installation:
- 1 x Solus S1721-BK Black Aluminum Wing Clip Post Top Fitter
- 2 x Wire Nuts (may be included for electrical connections)
Note: Post, globe, acorn, and additional mounting hardware (e.g., screws for securing to post) are not included.
5. Setup and Installation
Follow these steps to properly install your Solus S1721-BK Post Top Fitter:
- Disconnect Power: Before starting, ensure the electrical power supply to the post is completely turned off at the main circuit breaker or fuse box.
- Prepare Post: Confirm that the existing post has a 3-inch diameter and is clean and free of debris.
- Mount Fitter to Post: Carefully place the Solus S1721-BK fitter onto the top of the 3-inch post. Secure the fitter to the post using appropriate screws (not supplied) through the designated holes in the fitter base. Ensure it is stable and level.
- Wiring (if applicable): If your installation includes a light socket, connect the electrical wires from the post to the fitter's socket wires. Use the provided wire nuts (if included) or other approved connectors. Match black to black (live), white to white (neutral), and green/bare copper to ground. Refer to local electrical codes for proper wiring practices.
- Attach Globe/Acorn: Position your 5.25-inch neckless globe or acorn onto the fitter. The internal wing clips are designed to hold the globe securely. Gently press the globe down until it is seated firmly and evenly within the fitter.
- Restore Power: Once all connections are secure and the globe is properly installed, restore electrical power to the post.

Image 5.1: Example of the Solus S1721-BK Fitter installed on a post with a compatible globe. Note: Post and globe are not included with the fitter.
6. Operating Instructions
The Solus S1721-BK Post Top Fitter is a passive component designed to provide a stable and secure mounting point for compatible globes and acorns on a 3-inch post. Once correctly installed, its primary function is to hold the lighting fixture in place. Operation of the light source itself (e.g., turning on/off) is controlled by the external electrical system to which it is connected.
7. Maintenance
To ensure the longevity and optimal performance of your Solus S1721-BK Post Top Fitter, periodic maintenance is recommended:
- Regular Inspection: Periodically inspect the fitter for any signs of physical damage, corrosion, or loose connections.
- Cleaning: Clean the exterior surface of the fitter with a soft, damp cloth. Avoid using abrasive cleaners, solvents, or harsh chemicals, as these can damage the powder-coated finish.
- Secure Fasteners: Check that all mounting screws securing the fitter to the post remain tight. Retighten if necessary, but do not overtighten.
- Globe Stability: Ensure the globe or acorn remains securely seated within the fitter's wing clips.
8. Troubleshooting
If you encounter issues with your Solus S1721-BK Post Top Fitter, refer to the following troubleshooting guide:
| Problem | Possible Cause | Solution |
|---|---|---|
| Globe/Acorn is loose or falls out. | Incorrect globe size; globe not properly seated; wing clips not engaged. | Verify the globe has a 5.25-inch neckless opening. Ensure the globe is pressed firmly into the fitter until the wing clips secure it. |
| Fitter is unstable on the post. | Fitter not properly secured to the post; incorrect post diameter. | Ensure the post has a 3-inch diameter. Tighten all mounting screws that secure the fitter to the post. |
| Light fixture (if installed) is not working. | No power; faulty bulb; incorrect wiring. | Check the circuit breaker. Replace the light bulb. Verify all electrical connections are correct and secure (refer to Section 5). |
9. Specifications
- Brand: Solus
- Model: S1721-BK
- Material: Cast Aluminum
- Color: Black
- Product Dimensions: 6 inches (Width) x 2.87 inches (Height)
- Item Weight: Approximately 1.01 pounds
- Finish Type: Powder Coated
- Special Feature: Corrosion Resistant
- Post Compatibility: Designed for 3-inch diameter posts
- Globe/Acorn Compatibility: Fits 5.25-inch neckless openings

Image 9.1: Dimensional drawing of the Solus S1721-BK Fitter.
10. Warranty and Support
One-Year Warranty: The Solus S1721-BK Black Aluminum Wing Clip Post Top Fitter is covered by a one-year limited warranty from the date of purchase, covering defects in materials and workmanship under normal use.
Customer Support: For technical assistance, warranty claims, or any questions regarding your product, please contact our dedicated customer support team. Our US manufacturing facility provides 24/7 support to ensure your satisfaction.
Please visit the official Solus website or refer to your purchase documentation for contact details.





