For buyers who want a low-maintenance vinyl shed: 4 x 8 ft of vinyl for $799 ($24.97 per sq ft).
Amazon $799The Duramax SideMate Plus 4x8 Shed rates 3.1 among medium outdoor storage sheds; the Rubbermaid Medium Vertical Shed 4.3x4.6 rates 2.2 among small ones. The Duramax SideMate Plus 4x8 Shed costs $38.13 less ($799 vs $837.13).
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.

For buyers who want a no-paint resin shed: 4.3 x 4.6 ft of resin for $837.13 ($42.32 per sq ft).
Amazon $837.13Scores side by side
These two sit in different size classes (medium and small), and each is scored against the reference points for its own class, so a rating says how well each does among its own size peers. How we rank explains each factor.
| Factor weight | Duramax SideMate Plus 4x8 Shed | Rubbermaid Medium Vertical Shed 4.3x4.6 |
|---|---|---|
| Overall rating | 3.1/5 | 2.2/5 |
| Value 35% | 23 $24.97 per sq ft, $5.18 per cu ft ($799) | 0 $42.32 per sq ft ($837.13) |
| Size 15% | 33 32 sq ft of floor | 12 19.8 sq ft of floor |
| Construction 20% | 80 vinyl over a steel frame | 60 resin panels |
| Features 20% | 38 floor frame only, vents | 35 floor included |
| Warranty 10% | 100 15-year warranty | 0 warranty not published, scored as none |
Specifications
| Duramax SideMate Plus 4x8 Shed | Rubbermaid Medium Vertical Shed 4.3x4.6 | |
|---|---|---|
| Size | ||
| Footprint | 4 x 8 ft | 4.3 x 4.6 ft |
| Floor area | 32 sq ft | 19.8 sq ft |
| Capacity | 154.3 cu ft | - |
| Build | ||
| Material | Vinyl | Resin |
| Construction | Vinyl over a steel frame | Resin panels |
| Floor | Frame or kit only | Included |
| Doors and features | ||
| Door width | 29.8 in | - |
| Vents | Yes | - |
| Other | ||
| Warranty | 15 years | - |