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Quick answer: Choose Keter Westwood when the priority is a 150-gallon box, a 56-inch interior width, and an assisted lid. Choose Suncast's 99-gallon wicker box when a smaller footprint, published 300-pound lid-seat capacity, and five-year limited warranty fit better. For tighter patios, compare the 92-gallon Keter Kentwood with the 73-gallon Suncast instead of forcing a large box into the layout.
All four exact Amazon products below were directly purchasable when this guide was updated. Availability, sellers, colors, price, delivery, and included parts can change, so confirm the exact listing at checkout.
Keter vs Suncast: Exact Deck Box Comparison
| Exact model | Capacity | Exterior size | Interior size | Published distinction |
|---|
| Keter Westwood | 150 gal. | 61 W × 28.5 D × 25.35 H in. | 56 W × 24.6 D × 22.8 H in. | Steel-reinforced resin and assisted opening |
| Suncast wicker box | 99 gal. | 50 W × 25.5 D × 25.5 H in. | 47.5 W × 22.25 D × 22.5 H in. | 300-lb. lid-seat capacity and 5-year limited warranty |
| Keter Kentwood | 92 gal. | 50.3 W × 21 D × 23.2 H in. | 49.6 W × 20.4 D × 22.8 H in. | No-tool assembly and no assisted piston |
| Suncast wicker box | 73 gal. | 46 W × 23.5 D × 22.5 H in. | 44.25 W × 20.25 D × 20.25 H in. | 300-lb. lid-seat capacity and 5-year limited warranty |
Capacity alone does not determine fit. Long rigid items depend on interior width, thick cushions depend on interior depth and height, and a box used beside a walkway must leave safe opening and walking clearance.
Keter Westwood 150 Gallon: Best Large Keter
The exact Keter Westwood is the largest box in this comparison. Keter publishes a 61-by-28.5-by-25.35-inch exterior and a 56-by-24.6-by-22.8-inch interior. That 56-inch interior width is the useful number for long cushions, folded furniture covers, pool equipment, and other rigid items.
Keter describes steel-reinforced resin, built-in carrying handles, ventilation, an overlapping lid, and an automatic opening mechanism. The lid assistance matters when the box is opened frequently or when someone may be holding cushions with both hands.
Best fit: A larger patio with substantial cushion storage and enough room for the full 61-inch width plus lid and walking clearance.
Check first: The current color, seller, delivery method, assembly instructions, warranty terms, and whether every long item clears the 56-inch interior width.
Suncast 99 Gallon: Best Large Suncast
Suncast's current 99-gallon wicker design measures 50 by 25.5 by 25.5 inches outside and 47.5 by 22.25 by 22.5 inches inside. The manufacturer publishes a 300-pound lid-seat capacity, a pad-lockable lid, water resistance, UV protection, and a five-year limited warranty.
The exact Amazon product here is the white 99-gallon configuration. It is approximately eleven inches narrower than the Westwood, but it also gives up interior width and total capacity. Measure the cushions rather than treating the smaller exterior as an automatic fit.
Best fit: A medium patio where a 50-inch width works and the published seat capacity and warranty are important.
Check first: The current white variant, hinge and lid clearance, actual cushion dimensions, current warranty document, and whether the intended seated use stays within all manufacturer guidance.
Compact Comparison: Keter Kentwood 92 vs Suncast 73
Keter Kentwood 92 Gallon
Keter publishes a 50.3-by-21-by-23.2-inch exterior and a 49.6-by-20.4-by-22.8-inch interior for the Kentwood. It is only slightly narrower in capacity than the Suncast 99, but its 21-inch exterior depth makes it the shallowest box in this comparison.
Keter lists no-tool assembly, no piston assistance, a padlock provision, ventilation, carrying handles, and a 441-pound loading capacity for the current manufacturer model. Do not transfer that loading figure to a different model, mounting condition, or concentrated point load.
Suncast 73 Gallon
The Suncast 73-gallon wicker format measures 46 by 23.5 by 22.5 inches outside and 44.25 by 20.25 by 20.25 inches inside. Suncast publishes a 300-pound lid-seat capacity, pad-lockable lid, water resistance, UV protection, and a five-year limited warranty.
The exact Amazon product is the mocha-brown 73-gallon configuration. It is the narrowest box here, but its 23.5-inch exterior depth is greater than the 92-gallon Kentwood's published 21-inch depth. A lower gallon number does not guarantee the smallest footprint in every direction.
Which Brand Fits Each Priority?
- Most capacity in this comparison: Keter Westwood 150 gallon.
- Longest interior width: Keter Westwood at 56 inches.
- Shallowest exterior depth: Keter Kentwood at 21 inches.
- Narrowest exterior width: Suncast 73 gallon at 46 inches.
- Published five-year limited warranty: Both Suncast formats here.
- Assisted lid opening: Keter Westwood; the Kentwood is listed without piston assistance.
These are model-level results, not universal brand rankings. Keter and Suncast each sell multiple constructions, capacities, colors, and lid systems. Compare the exact model, not an assumed brand reputation.
How to Measure for a Deck Box
- Measure every cushion or rigid item at its longest, widest, and thickest point.
- Compare those measurements with the published interior dimensions, not gallons alone.
- Mark the exterior footprint on the patio with painter's tape.
- Add room for the lid to open fully without hitting a wall, railing, grill, furniture, or plant.
- Keep a safe walking path and confirm the surface is level and stable.
- Check delivery access, package size, assembly space, and whether the assembled box can pass through any gate or doorway.
Weather, Seating, and Storage Safeguards
- Use "water-resistant," not "waterproof," unless the exact manufacturer makes and defines that claim.
- Keep moisture-sensitive documents, electronics, chemicals, and valuables in storage designed for those items.
- Follow the exact seating or loading guidance. A reinforced lid does not make every edge, hinge, or interior surface load-bearing.
- Use a compatible padlock where supported, but do not describe a resin box as theft-proof.
- Place the box on a level surface and inspect the lid, hinges, panels, and fasteners periodically.
- Confirm local safety guidance before storing pool chemicals, fuel, batteries, or other hazardous materials.
Frequently Asked Questions
Is Keter better than Suncast?
Not at the brand level. In this exact comparison, Keter offers the largest capacity, longest interior width, and the only assisted-lid model. Suncast publishes a five-year limited warranty and 300-pound lid-seat capacity for both exact formats. The best choice depends on the items, footprint, lid use, and warranty terms.
Which is better for patio cushions?
Measure the cushion stack. The Westwood provides the most volume and interior width, while the other models use less patio space. A 99-gallon box can still fail if one rigid cushion is longer than its interior width.
Can you sit on these deck boxes?
Suncast publishes a 300-pound lid-seat capacity for the 99- and 73-gallon formats, and Keter publishes model-specific loading information for its boxes. Follow the current instructions for the exact model and do not assume one model's capacity applies to another.
Are Keter and Suncast deck boxes waterproof?
The current manufacturer language supports weather resistance and water resistance, not a universal promise that every seam remains watertight under every condition. Protect moisture-sensitive items separately.
Which model is easiest to assemble?
Keter lists no-tool assembly for the Kentwood. Suncast also lists easy or no-tool assembly for several current 73-gallon configurations. Review the exact manual and package before assuming assembly details transfer across colors or model numbers.
The Bottom Line
Choose the Keter Westwood for maximum capacity and assisted opening, the Suncast 99 for a smaller large-box footprint with published seating and warranty details, the Keter Kentwood for shallow no-tool storage, or the Suncast 73 for the narrowest exact box here. The correct model is the one whose interior dimensions fit the contents and whose exterior footprint leaves safe lid and walking clearance.
