100 Gallon Resin Deck Box Dark Gray - Lockable Outdoor Storage

Our review of the 100 gallon resin deck box in dark gray finds it best suited for homeowners who need a roomy, weather-resistant storage solution that doubles as occasional seating. The single biggest reason to buy is the generous 100 gallon interior that swallows long bench cushions, pool toys, and gardening gear while keeping them out of sight; the build focuses on practical features like hydraulic struts, side handles, and a lockable lid to make daily use easy and secure. It is a straightforward, functional piece rather than a decorative centerpiece.

Key Features

• Generous Capacity: The 100 gallon interior (44.9 in L x 21.9 in W x 21.6 in H inside) stores bulky patio cushions and pool gear with room to spare.
• Weather Resistant Resin: Constructed from robust resin designed to resist water, rust, UV and fading so it can stay outdoors most seasons.
• Lockable Lid: The lid accepts a lock for added security, helping keep tools and supplies protected from pets and casual access.
• User-Friendly Operation: Hydraulic struts make opening and closing smooth and safer, while dual built-in side handles help reposition the box when needed.
• Bench Function: The lid supports seating up to 485 lb, providing extra outdoor seating when guests are over or when you need a quick seat.
• Quick Assembly: The unit can be assembled in about 15-30 minutes and has a rattan-grain finish that blends with many patio styles.

Who It's For

This deck box is ideal for homeowners with medium to large patios, balconies, or poolside areas who need a tidy place for cushions, garden tools, and seasonal gear. It works well for users who value easy operation and occasional seating and who want a single, mid-priced unit that handles multiple needs.

Those who need a permanently watertight trunk for heirloom items or who require heavy commercial-grade security should look elsewhere; reports of mixed water resistance and occasional lid warping mean this model is best for general household storage rather than delicate or high-value contents kept in all-weather conditions.

Pros & Cons

Pros

• Large 100 gallon capacity accommodates long cushions and bulky items with ease.
• Weather-resistant resin construction helps resist UV and rust for outdoor use.
• Hydraulic struts and built-in handles improve usability and safe operation.
• Can serve as a 485 lb bench, adding functional seating to outdoor spaces.

Cons

• Some users report lid warp or occasional water ingress, so it may not be fully waterproof in extreme conditions.
• Resin construction is durable but not as heavy-duty as metal or commercial containers for high-security needs.

Specifications

Capacity	100 gallon
Inside Dimensions	44.9 in L x 21.9 in W x 21.6 in H
Outside Dimensions	45.3 in L x 21.7 in W x 23 in H
Material	Weather-resistant resin
Seat Capacity	485 lb
Features	Hydraulic struts, dual side handles, lockable lid, rattan-grain finish

Our Verdict

The dark gray 100 gallon resin deck box is a practical, good-value choice for most homeowners who need a roomy, easy-to-use outdoor storage solution that also provides extra seating. It balances capacity, user-friendly features, and weather resistance well for routine patio and poolside storage, though buyers storing delicate items or requiring absolute waterproofing should consider more heavy-duty options.

Frequently Asked Questions

Is this box waterproof?
It is designed to be weather resistant against UV and light rain, but some users report occasional water ingress and lid warp in heavy exposure, so avoid storing items that must remain completely dry.

Can it be used as a bench?
Yes, the lid is rated to support up to 485 lb and works as occasional seating on patios or decks.

How long does assembly take?
Assembly generally takes about 15-30 minutes with basic tools and two people for easier handling.