The dimensions of each planter are 4 feet by 8 feet by 11 3/4 inches deep. The specific width and length is important, as these planters were built in order to employ the "Square Foot Gardening" method, which is supposed to conserve space, water, seeds and effort. the 4 by 8 foot dimensions also allow the planters to be built with minimal material wastage using nominal sized lumber.
The planters are built out of redwood cedar lumber. Cedar is very expensive (materials cost about $130 per planter) but it is naturally resistant to rot, termites and damage from sunlight. It's also very beautiful wood and a pleasure to work with because it's so soft. As an added bonus, sawing and drilling cedar fills your workspace with a pleasing aroma.
I tried to provide enough detail on methods and techniques that anybody should be able to build these and do a professional looking job; even if you're a beginner.
Please read on to find out how you too can build these planters.