DoxBox Fiberglass Rectangle 47"
A tall, narrow fiberglass box that fits a slim strip of dock. The listing leaves out the lock and lid details.
Amazon $699$699
The DoxBox Fiberglass Rectangle 47" is the better dock box overall, rated 2.7 to 2.3. The DoxBox Fiberglass Rectangle 47" leads on value and size. The C&M Marine CM02 Dock Box 48" wins on features. The DoxBox Fiberglass Rectangle 47" costs $203 less ($699 vs $902).
Prices were last checked November 9, 2026. Product prices and availability are accurate as of that date and are subject to change; the price and availability shown on Amazon or the retailer's site at the time of purchase apply. As an Amazon Associate we earn from qualifying purchases.
C&M Marine CM02 Dock Box 48"
A small low-profile fiberglass box from a marina supplier. It costs more than the Taylor Made low-profile boxes and has fewer features.
Amazon $902$902
Which should you buy?
- Choose the DoxBox Fiberglass Rectangle 47" for value ($47.23 per cu ft ($699, 14.8 cu ft) vs $90.20 per cu ft ($902, 10 cu ft)) and size (14.8 cu ft exterior volume vs 10 cu ft exterior volume).
- Choose the C&M Marine CM02 Dock Box 48" for features (lockable latch vs vents).
Scores side by side
Each factor is scored 0-100 against the same fixed reference points for every under 18 cu ft dock box; a clear win is highlighted. How we rank explains each one.
| Factor weight | DoxBox Fiberglass Rectangle 47" | C&M Marine CM02 Dock Box 48" |
|---|---|---|
| Overall rating | 2.7/5 | 2.3/5 |
| Value 30% | 40 $47.23 per cu ft ($699, 14.8 cu ft) | 5 $90.20 per cu ft ($902, 10 cu ft) |
| Size 15% | 28 14.8 cu ft exterior volume | 8 10 cu ft exterior volume |
| Build 20% | 80 fiberglass, UV-resistant finish | 80 fiberglass, stainless hardware |
| Features 20% | 10 vents | 25 lockable latch |
| Warranty 15% | 0 warranty not published, scored as none | 0 warranty not published, scored as none |
Specifications
| DoxBox Fiberglass Rectangle 47" | C&M Marine CM02 Dock Box 48" | |
|---|---|---|
| Size | ||
| Exterior (W x D x H) | 47 x 17 x 32 in | 48 x 20 x 18 in |
| Shape | Rectangle | Rectangle |
| Style | Standard | Low profile |
| Exterior volume | 14.8 cu ft | 10 cu ft |
| Interior | - | 41.5 x 15.5 x 17 in |
| Build | ||
| Material | Fiberglass | Fiberglass |
| UV-resistant finish | Yes | - |
| Stainless hardware | - | Yes |
| Made in USA | Yes | Yes |
| Features | ||
| Lid support | - | Stay cables |
| Lockable | - | Yes |
| Vents | Yes | - |