Finding the right extra large pool storage box can protect cushions, pool toys, and tools while keeping your outdoor area tidy. This guide reviews top 5 large-capacity resin deck boxes, highlighting capacity, durability, seating options, and ease of use. Each selection is well-suited for decks, patios, poolsides, and garden spaces in American backyards.
| Product | Brand | Capacity | Key Benefit |
|---|---|---|---|
| Keter Westwood 150 Gallon Deck Box Organizer | Keter | 150 gallons | Lockable, dual-use bench seating |
| Decksplore 320 Gallon Resin Deck Box | Decksplore | 320 gallons | Very large storage, UV-resistant, waterproof |
| KFY 320 Gallon Outdoor Storage Box | KFY | 320 gallons | High capacity, UV resistant, durable |
| Greesum 82 Gallon Resin Deck Box | Greesum | 82 gallons | Weatherproof, lockable, multi-use</ |
| Devoko 100 Gallon Resin Deck Box | Devoko | 100 gallons | All-weather, stylish design, lockable |
Note: All products are constructed from weatherproof resin and offer lockable lids for secure outdoor storage. Seating capabilities vary by model, so choose based on storage needs and space availability.
Keter Westwood 150 Gallon Deck Box Organizer

The Keter Westwood model combines large interior storage with outdoor seating. Its 150-gallon capacity accommodates cushions, pool floats, and tools. The resin cabinet features a wood-plank look and an easy-lift mechanism for smooth, quiet operation. The lid locks for security and weather protection, making it suitable for decks, patios, and pool areas. The bench seating design adds practical space for two adults during gatherings or after yard work.
Keter Westwood 150 Gallon Resin Large Outdoor Storage Box

This variant mirrors the same 150-gallon capacity with lockable storage and dual-use seating. Its durable resin construction provides a weather-resistant option for cushions, pool toys, and garden tools. The wood-plank motif blends with outdoor furniture, while the easy-lift lid supports quick access during outdoor activities and gatherings.
Keter Westwood 150 Gallon Resin Large Outdoor Storage Box

With another take on the 150-gallon capacity, this version emphasizes a rugged resin cabinet with a wood-plank look. It supports two adults on the bench and provides ample space for storing outdoor essentials. The lid’s smooth action helps reduce noise and wear over time, and the lockable feature adds security for yard tools and valuables left outside.
Decksplore 320 Gallon Resin Deck Box

The Decksplore model is designed for serious organization with a 320-gallon interior. It provides a wide opening for easy access to bulky items like cushions, pool accessories, and garden tools. The weather-resistant resin resists rain, sun, and UV exposure, helping prevent fading and damage. Its large interior is ideal for homes with extensive outdoor storage needs, and the lockable lid keeps contents secure when unattended.
KFY 320 Gallon Waterproof Outdoor Storage Box

The KFY storage box offers a substantial 320-gallon capacity with UV-resistant resin. It doubles as a seat or table, supporting up to 230 lbs. This makes it a versatile option for outdoor gatherings, functioning as both storage and a patio surface. Its robust construction is designed to withstand varied weather conditions, helping keep cushions and tools dry and protected year-round.
Keter Kentwood 92 Gallon Resin Deck Box

The Kentwood series offers a smaller yet sturdy 92-gallon solution for covered patio spaces. This model excels at storing cushions, pool toys, and beach towels while maintaining a compact footprint. The exterior dimensions and rugged resin construction support long-term outdoor use and blend with contemporary outdoor furniture aesthetics.
Greesum 82 Gallon Resin Deck Box

The Greesum model offers 82 gallons of storage with weatherproof resin that resists water, UV exposure, and corrosion. It functions as a seat or table and can support up to two adults. This compact option is suitable for smaller patios or spaces where a larger box would overwhelm the area while still providing secure, weather-resistant storage.
Devoko 100 Gallon Resin Deck Box

Devoko’s 100-gallon deck box features an all-weather design with a modern rattan-inspired finish. The larger inner space accommodates cushions and tools, while its lockable lid ensures security. The resin material is chosen for durability against fading, rusting, and bending, making it suitable for extended outdoor use in various climates.
Buying Guide
- Capacity and space: Choose a model that fits your storage needs and available outdoor space. Large options like 320 gallons are ideal for extensive gear, while 82–100 gallons suit mid-sized setups.
- Material and weather resistance: Look for weatherproof resin with UV resistance to prevent fading and cracking from sun exposure and rain.
- Security: Lockable lids help protect contents from theft or curious pets and weather.
- Seating and multi-function use: Some models double as benches or tables, adding outdoor versatility and saving space.
- Ease of access: Wide-opening lids and smooth hinges reduce effort when loading bulky items and help with daily use.
- Durability and maintenance: Resin constructions resist rust, rot, and warping; simple cleaning requirements extend life.
- Dimensions and fit: Consider height, width, and depth to ensure the box does not intrude on walkways or seating areas.
- Aesthetics: Wood-look resin and color options (brown, grey, black) help the unit blend with existing outdoor furniture.
Selecting the right extra large pool storage box involves balancing capacity, seating needs, and space. For heavy storage and frequent access, Decksplore or KFY’s 320-gallon models offer ample interior room and weather protection. If you want a dual-use piece that also serves as seating, the Keter Westwood family and related options provide practical, secure solutions with durable finishes. For smaller patios, Greesum or Kentwood variants deliver reliable storage without overwhelming the space.