Bottom Shelf for Riga IVs: 25" w x 13'10" long

Bottom Shelf for Riga IVs Greenhouse

The Riga IVs Bottom Shelf is a purpose-built polycarbonate shelving unit for the Riga IVs greenhouse — the "S" variant of the Riga IV series. Suspended with braces at regular height to allow larger equipment, pots, or supplies to be stored underneath, each unit covers one side of the greenhouse. At 25" deep × 13'10" long, it shares the same dimensions as the Riga IV shelf, reflecting that the IVs and IV share the same interior length.

*Free shipping only when purchased together with a Riga greenhouse. Ordered separately, an additional shipping charge applies.

Key Features

• Twin-wall polycarbonate shelf surface — durable, lightweight, and allows light transmission
• Suspended with braces at regular height — allows larger equipment, pots, or supplies to be stored underneath
• 25" deep × 13'10" long — sized for the Riga IVs interior length
• Each unit covers one side of the greenhouse — order two for full double-sided shelving
• Purpose-built for the Riga IVs — engineered to fit the Riga IVs frame exactly

Specifications

Riga Bottom Shelf Series — Which Shelf Do You Need?

All Riga bottom shelves share the same 25" depth and suspended brace design. Length and price scale with each greenhouse’s interior length. Order the shelf that matches your exact greenhouse model — even when dimensions are the same, each shelf is engineered for its specific frame.

How the Suspended Shelf Design Works

Unlike floor-standing shelving, the Riga bottom shelf is suspended from the greenhouse frame with braces at a regular working height. This creates usable storage space underneath the shelf — ideal for:

• Large pots, planters, and grow bags that are too tall for a standard shelf
• Watering cans, fertilizer bags, and bulk supplies
• Propagation equipment, heating mats, and trays stored at floor level
• Wheelbarrows and garden carts that need to slide under during use

Frequently Asked Questions

Does one unit cover both sides of the Riga IVs?
No — each unit covers one side of the greenhouse only. To shelf both sides of your Riga IVs, you will need to purchase two units ($624 × 2 = $1,248 for full double-sided shelving).

Why does the Riga IVs shelf have the same dimensions and price as the Riga IV shelf?
Unlike the IIs/IIIs pairing (where the "S" variant is shorter), the Riga IVs and Riga IV share the same interior length of 13'10". The "S" designation in the Riga IV series refers to a different configuration aspect rather than a shorter length. Both shelves are 25" × 13'10" and priced at $624, but each is engineered with frame attachment points specific to its model. Order the shelf designated for your exact greenhouse model.

Is this shelf compatible with the standard Riga IV?
While the Riga IVs and Riga IV shelves share the same dimensions, 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.

Is this shelf compatible with other Riga models?
This shelf is engineered specifically for the Riga IVs. Other Riga models have different interior lengths or frame configurations and require their own model-specific shelving. See the series table above for all available shelf models.

Why is the shelf made from twin-wall polycarbonate?
Twin-wall polycarbonate is the ideal greenhouse shelf material — lightweight, durable, moisture-resistant, and allows light to pass through to plants below. Unlike solid wood or metal shelving, polycarbonate won’t rot, rust, or block light in a humid greenhouse environment.

Can I add shelving after I’ve already assembled my Riga IVs?
Yes — the Riga IVs bottom shelf can be added to an existing assembled greenhouse. It attaches to the Riga frame using the built-in brace system. Contact us for installation guidance if you are adding shelving post-assembly.