Top Shelf for Riga IVs: 10" wide x 13'10" long
Top Shelf for Riga IVs Greenhouse
The Riga IVs Top Shelf is a purpose-built upper-tier polycarbonate shelving unit for the Riga IVs greenhouse. Narrower and higher than the bottom shelf, it is designed for smaller plants, seedling trays, and propagation work at eye level — with polycarbonate inserts that allow light to pass through to the plants and shelves below. Each unit covers one side of the greenhouse.
*Free shipping only when purchased together with a Riga greenhouse. Ordered separately, an additional shipping charge applies.
Key Features
- Twin-wall polycarbonate shelf surface with polycarbonate inserts — maximizes light transmission to plants below
- 10" deep × 13'10" long — sized for the full interior length of the Riga IVs
- Suspended shelving — positioned high in the greenhouse for seedlings, small pots, and propagation trays
- Each unit covers one side of the greenhouse — order two for full double-sided top shelving
- Purpose-built for the Riga IVs — engineered to fit the Riga IVs frame exactly
Specifications
| Compatible Model | Riga IVs |
| Shelf Depth | 10 inches |
| Shelf Length | 13 feet 10 inches |
| Shelf Position | Top / upper tier (suspended high) |
| Material | Twin-wall polycarbonate with polycarbonate inserts |
| Light Transmission | Yes — polycarbonate inserts allow light through to plants below |
| Coverage | One side of the greenhouse per unit |
| SKU | RIGA-IVS-TOP-SHELF |
| Price | $439 per unit (one side) |
| Shipping | Free when purchased with a Riga greenhouse; additional charge when ordered separately |
Top Shelf vs. Bottom Shelf — How They Work Together
| Feature | Top Shelf (this product) | Bottom Shelf |
|---|---|---|
| Depth | 10 inches | 25 inches |
| Length | 13'10" | 13'10" |
| Position | Upper tier — suspended high | Regular height — suspended with braces |
| Light Transmission | Yes — polycarbonate inserts | Standard polycarbonate |
| Best For | Seedlings, small pots, propagation trays | Larger plants, staging, storage underneath |
| Price (per side) | $439 | $624 |
Many Riga IVs growers use both tiers together: the bottom shelf for larger plants and staging, and the top shelf for seedlings and propagation at eye level. The polycarbonate inserts in the top shelf ensure that plants on the bottom shelf still receive adequate light.
Riga Top Shelf Series — Which Top Shelf Do You Need?
| Model | Top Shelf Length | Price (per side) | Full Double-Sided |
|---|---|---|---|
| Riga IIs | 7' | $319 | $638 |
| Riga IIIs | 10'4" | $379.99 | $759.98 |
| Riga III | 10'4" | $379.99 | $759.98 |
| Riga IV | 13'10" | $439 | $878 |
| Riga IVs | This shelf — 13'10" | $439 | $878 |
All Riga top shelves share the same 10" depth and polycarbonate insert design. The Riga IVs and Riga IV top shelves share the same 13'10" length and $439 price, but are engineered with frame attachment points specific to each model. Order the top shelf designated for your exact greenhouse model.
Frequently Asked Questions
Does one unit cover both sides of the Riga IVs?
No — each unit covers one side of the greenhouse only. To add top shelving to both sides of your Riga IVs, you will need to purchase two units ($439 × 2 = $878 for full double-sided top shelving).
The Riga IVs and Riga IV top shelves are the same length and price — are they interchangeable?
Not necessarily. While both top shelves share the same 10" × 13'10" dimensions and $439 price, they are engineered with frame attachment points specific to each model. We recommend ordering the shelf designated for your exact greenhouse model to ensure a proper fit. Contact us if you have questions about compatibility.
Can I use the top shelf and bottom shelf together in the same Riga IVs?
Yes — the Riga IVs top and bottom shelves are designed to work together as a two-tier shelving system. The top shelf sits higher in the greenhouse for seedlings and small plants, while the bottom shelf provides a wider surface at regular working height with storage space underneath. The polycarbonate inserts in the top shelf allow light to reach the bottom shelf and floor below.
Why does the top shelf have polycarbonate inserts?
The polycarbonate inserts allow natural light to pass through to the plants and shelves below. Without light-transmitting inserts, a solid upper shelf would cast shade on everything beneath it — reducing growing conditions on the bottom shelf and floor. The polycarbonate inserts maintain light levels throughout the greenhouse interior.
Why is free shipping only available when purchased with a greenhouse?
The shelf ships free when ordered together with a Riga IVs greenhouse because it can be included in the same freight shipment. When ordered separately, it ships as a standalone item and an additional shipping charge applies due to its size.