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For a square bed you can build up in stages

Frame It All GardenBLOX 4 × 4 ft Raised Bed

A 4 × 4 ft composite bed that stacks from one to four levels. Each level adds 5.5 inches of height and 7.33 cubic feet of soil, by the maker’s figures.

4 sizes and layouts

Each size drawn from above at the same scale, with the maker’s listed capacity.

Drawn to scale from the maker’s figures: 48 in by 48 in, 5.5 in tall.1224365.5 in48 in × 48 in
Drawn from the maker’s published figures: the footprint from above on the left, the height on the right, in inches. Every bed on this site uses the same two scales.
Inside
Measure after assembly
Planting depth
Choose fill depth
Listed capacity
7.33 ft³
Outside footprint
Measure after assembly

For a square bed you can build up in stages

Stack only the levels you need: the soil figure rises by 7.33 cubic feet with each one. The 4 × 4 ft size is nominal, so measure inside after assembly.

Style
Open-bottom bed
Material
Composite of 38% HDPE plastic and 62% wood fibers
Warranty
Limited lifetime warranty with registration; 5-year warranty without registration.

Choose the size or layout

Use the widest outside footprint to plan paths. For a soil order, measure between the inside walls after assembly and choose your filled depth; advertised dimensions can be rounded. Rectangular sizes below read length × width × height.

Scroll across the table to compare all measurements and plan a size.

Size / arrangementAdvertised dimensionsDocumented outside footprintInside dimensionsPlanting depthListed capacityPlan
1 level, 5.5 in tall48 × 48 × 5.5 inMeasure after assemblySize sourceMeasure after assemblyChoose fill depth7.33 ft³Plan this size: 1 level, 5.5 in tall
2 levels, 11 in tall48 × 48 × 11 inMeasure after assemblySize sourceMeasure after assemblyChoose fill depth14.66 ft³Plan this size: 2 levels, 11 in tall
3 levels, 16.5 in tall48 × 48 × 16.5 inMeasure after assemblySize sourceMeasure after assemblyChoose fill depth21.99 ft³Plan this size: 3 levels, 16.5 in tall
4 levels, 22 in tall48 × 48 × 22 inMeasure after assemblySize sourceMeasure after assemblyChoose fill depth29.32 ft³Plan this size: 4 levels, 22 in tall

Notes on these sizes

  • All sizes: Maker’s soil recommendation.

Prepare and assemble this bed

Compare the material, bottom and care choices if you are still deciding between families. Follow the site preparation and liner checklist for the supporting surface.

  1. Choose the exact configuration and lay out its parts. Check the required tools in the selected kit instructions.
  2. Prepare a stable, level position and confirm the outside footprint with working paths.
  3. Check corners, fasteners, protective edging and any layout-specific braces against the kit instructions before adding fill.
  4. Measure the finished inside and outside separately, then update your plan. Preserve the maker’s fill restrictions.

Mark the outside footprint on the ground before assembly, including any legs or protruding corners. Leave a route for carrying bags, reaching the plants and maintaining nearby beds.

This bed is open to the ground. Check the soil and drainage where it will sit before adding fill. Its wall height is not a prescription for how deep the growing mix should be.