Product Description
Windsor 4"×4" White PVC Low-Profile Solar Post Cap — 3.5" Adapter Included
- Low-profile design — Sleek cap with hidden LEDs for a refined, even glow.
- Dual fit out of the box — Fits 4"×4" PVC posts and includes a 3.5"×3.5" adapter for wood posts.
- Even wall wash — Lens geometry casts light onto all four faces for balanced illumination.
- Solar convenience — Dusk-to-dawn operation with no wiring to run.
- Upgrade path — Optional 5" adapter available when transitioning to larger posts.
The Windsor cap offers understated style that reads clean and modern on both vinyl and wood systems. With surface-mount LEDs concealed in the body, the cap creates a soft wall-wash effect on all four sides, avoiding hot spots while still marking posts, entries, and steps. It ships ready for 4" PVC, and the included adapter sizes it perfectly to 3.5" wood posts—ideal for mixed-material projects. A solar module and dusk sensor handle the lighting automatically once installed.
Set the cap square to the post, ensure the panel has clear sun for charging, and give it a full day before the first night test. If your project also uses 6" feature posts, keep the aesthetic aligned by using the aluminum Cambridge 6"×6" Solar Cap on those locations. For adapting classic 4" PVC caps elsewhere to 3.5" wood posts, keep a 3.5"×3.5" Classy Caps Adapter on hand for a snug fit.
Specifications
| Fitment | 4"×4" PVC; includes adapter for 3.5"×3.5" wood |
| Lighting | Hidden surface-mount LEDs; even four-side wash |
| Operation | Solar; dusk-to-dawn auto on/off |
| Optional | 5"×5" adapter available (sold separately) |
Installation (Quick Steps)
- Choose fit — Use as 4"×4" PVC cap or install the included 3.5" adapter for wood posts.
- Mount — Fasten square; keep the solar panel unshaded.
- Charge — Allow full sun exposure before first-night check.
- Maintain — Clean lens/panel periodically.
Buying Guide
- Mixed materials — Included adapter simplifies PVC + wood projects.
- Brightness — Accent-level light for markers and wayfinding.
- Scale — Pair with Cambridge on 6" feature posts for a uniform look.
Frequently Asked Questions
- Is the 3.5" adapter included?
- Yes—Windsor ships with a 3.5" adapter for wood posts.
- Does it work on 5" posts?
- Use the optional 5" adapter for 5" posts (sold separately).
- Is wiring required?
- No—Windsor runs on solar and turns on automatically at dusk.
Comparison
- Windsor (this product) — PVC 4" cap with included 3.5" adapter; low-profile look.
- Cambridge 6"×6" — Premium aluminum cap for 6" posts; higher-end finish for feature locations.
- Imperial Aluminum — Cast-aluminum cap for 4" posts; modern profile, aluminum body.
