Straight-on architectural shot of a hand-planed cedar flowerbox mounted on a historical brick New England home, soft overcast afternoon light
Straight-on architectural shot of a hand-planed cedar flowerbox mounted on a historical brick New England home, soft overcast afternoon light
Made to Measure

Planters Built for Your Windows

Tell us your exact window sill dimensions. We hand-build each premium cedar planter in our New Hampshire workshop to guarantee an absolute, architectural-grade fit.

The Method

How to Measure Your Sill

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Measure the Width

Check the Depth

Submit Your Specs

Use a steel tape to measure the outer frame of your window casing from left to right. We recommend subtracting one inch for clearance.

Verify the flat surface depth of your sill. Our standard boxes require at least six inches of flat clearance for secure mounting.

Enter your dimensions in our inquiry form below. Our workshop team will review the details and provide a custom quote within 24 hours.

Start Your Order

Request a Custom Quote

Have an unusual sill or historic restoration project? Send us your dimensions or upload architectural drawings for a direct consultation with our lead woodworker.

What wood species do you use?

We build exclusively with premium northern white cedar. This native New England timber contains natural oils that resist rot, decay, and boring insects without chemical treatments.

Common Questions

How do these boxes mount to my home?

Sill Sizing Details

Each custom order includes heavy-duty timber mounting brackets and structural screws. We provide pre-drilled pilot holes in the back of your boxes to make installation straightforward.

Can you match historic trim work?

Yes. For historic restorations, you can upload photos of your existing architectural molding in the contact form. We can custom-plane profiles to match your home's heritage.