NUNU LAB 340 Gallon Outdoor Deck Box Review
A NUNU LAB 340 gallon outdoor deck box in Rattan Black, built from weather-resistant resin with a hydraulic lift lid and a seating weight capacity of up to 660 pounds.
| Brand | NUNU LAB |
|---|---|
| Capacity | 340 gallons |
| Material | Weather-resistant resin |
| Color | Rattan Black |
| Lid mechanism | Hydraulic piston lift |
| Seat weight capacity | Up to 660 lb |
| Best for | Backyards, patios and poolside areas needing large waterproof storage that can also double as a bench or table |
Product Overview
NUNU LAB builds this as a large-capacity, multi-purpose outdoor storage box rather than a simple lidded bin, sized to hold patio cushions, garden tools, pool accessories, sports equipment or firewood while also functioning as extra seating or a side table.
The resin construction is positioned as weatherproof across rain, snow and sun exposure, with a stable, non-wobbling base once assembled.
Score Breakdown
This verdict is based on the manufacturer's stated specifications, the current Amazon listing and its product images, the confirmed materials and design, real buyer ratings, and our research into the product category. Scores are consistent editorial judgments, not laboratory measurements, and we did not receive a paid sample.
Key Features
Holds cushions, tools, pool gear or firewood.
Opens effortlessly, closes softly.
Doubles as seating or a side table.
Resists rust, peeling and dents.
Accepts a lock for added security (not included).
Design and Build Quality
The box is finished in Rattan Black resin, chosen for resistance to rust, peeling and dents compared to metal outdoor storage. The listed footprint is 75.08 inches long by 34.37 inches wide, weighing 86.42 pounds; the listing's separate height figure of 6.69 inches reads as a packaged or component dimension rather than the box's true assembled seat height, given the box is marketed as bench-height seating.
Access is through a hydraulic piston lid system, which the listing says opens effortlessly and closes softly rather than slamming or needing to be held. The model is listed simply as TT, which is not a descriptive manufacturer name.
Performance in Everyday Use
As a bench, the box carries a stated weight capacity of up to 660 pounds, enough for multiple people to sit on at once according to the listing. Waterproofing is built in to keep stored items dry, with the listing also mentioning the box can double as a secure package delivery box by a front door.
The box is described as lockable, which the listing clarifies means it accepts a lock for added security; a lock itself is not included in the purchase.
How It Performs: The Evidence
| Decision factor | What we found | Evidence and measurement | Score | Why it matters |
|---|---|---|---|---|
| Capacity | 340 gallons | Listing title and size field both state 340 Gal / 340 Gallon | 8.6 | Confirms the stated storage capacity |
| Lid mechanism | Hydraulic piston system | Listing states featuring a hydraulic piston system, the lid opens effortlessly and closes softly | 8.4 | Confirms the stated lid mechanism |
| Seat rating | Up to 660 lb | Listing states a weight capacity of up to 660 lbs | 8.5 | Confirms the stated bench weight rating |
| Footprint | 75.08 x 34.37 inches | Listed item dimensions give length 75.08 in, width 34.37 in | 8.2 | Confirms the stated box footprint |
| Weight | 86.42 lb | Listed item weight is 86.42 pounds | 8.0 | Confirms the stated product weight |
| Material | Weather-resistant resin | Listing states made of high-quality weather-resistant resin, designed to withstand rain, snow, and sun | 8.2 | Confirms the stated material |
Who Should Buy It
- Backyards, patios and poolside storage
- Extra outdoor seating up to 660 lb
- Storing cushions, tools, pool gear or firewood
- Secure package delivery storage by a front door
- Anyone needing a lock included out of the box rather than buying one separately
- A lock is not included, despite the lockable design
- Listed height figure (6.69 inches) does not match the box's bench-height use, likely a packaging or component dimension rather than true seat height
- At 86.42 pounds, the box itself is heavy to move once assembled
- Finished only in Rattan Black on this listing
Full Specifications
How It Compares
| Feature | NUNU LAB | Typical option | Higher-tier option |
|---|---|---|---|
| Capacity | 340 gallons | Smaller standard deck box | Comparable large-capacity deck box |
| Lid mechanism | Hydraulic piston lift | Manual lift, no piston | Comparable hydraulic-lid box |
| Seating rating | Up to 660 lb | Lighter or unrated seating | Comparable heavy-duty bench box |
| Material | Weather-resistant resin | Metal, prone to rust | Comparable resin deck box |
| Security | Lockable (lock not included) | No lock provision | Comparable lockable storage box |
Alternatives Worth a Look



A 340 gallon resin deck box with a hydraulic lid, a 660 pound bench weight rating and weatherproof construction in Rattan Black. It suits large-capacity outdoor storage and extra seating well, with the one real catch being the lockable design needs a separately purchased lock.
Frequently Asked Questions
How much storage capacity does this box have?
340 gallons, per the listing.
Does it come with a lock?
No, the box is lockable but a lock is not included.
Can I sit on it?
Yes, it is rated to hold up to 660 pounds as a bench, per the listing.
How does the lid open?
Through a hydraulic piston system, opening effortlessly and closing softly.
What is it made of?
Weather-resistant resin, per the listing.
What color does it come in?
Rattan Black, per the listing.
This review is based on the manufacturer's stated materials, capacity, weight rating and dimensions as listed. It is editorial analysis of the stated specifications, not independent hands on testing of this specific unit's actual weather resistance or hydraulic lid longevity.