Pure Garden Railing Planter Boxes 2-Pack 20.75" White — Removable Drainage Inserts, Fits 3-4" Rails

These two Pure Garden railing planters are 20.75-inch, 6-gallon outdoor flower boxes designed to clamp over 3"–4" deck or balcony rails and include removable drainage inserts for healthier soil moisture control.

Give a porch, balcony, or deck instant curb appeal with this pair of durable, lightweight railing planters. Each unit provides two planting chambers (one on each side of the rail), totaling 6 gallons of soil capacity per planter, and fits most wood or metal rails 3" to 4" wide. Built from sturdy plastic, they resist the elements while remaining easy to lift and reposition. The removable elevated drainage inserts allow excess water to collect in a shallow reservoir, protecting roots from standing water and simplifying winter storage or seasonal planting changes.

How do these planters keep plants from becoming waterlogged?

The included elevated drainage inserts create a separation between soil and excess water. Water drains into the bottom reservoir so roots are less likely to sit in saturated soil, and you can remove the inserts or drill holes in the base if full drainage is preferred.

• Removable elevated inserts lift soil above collected water
• Reservoir captures overflow for temporary retention
• Optional drainage holes can be drilled for continuous outflow
• Easy to lift out inserts for cleaning or replanting

Will these boxes fit my deck or balcony railing?

Yes — the planters are sized to sit over most flat wood or metal railings between 3" and 4" wide. The long, dual-sided design places plantings on both sides of the railing for a full, balanced look without blocking space on your deck.

• Designed for rails 3"–4" wide (flat top rails work best)
• Overall dimensions: 20.75" L x 15.25" W x 8" H
• Interior planter space per side: 19" L x 5.5" W x 5.5" H
• Lightweight 1.4 lb construction for easy installation

What planting options and weight can these support?

Each planter holds up to 6 gallons of growing medium, ideal for annuals, perennials, herbs, or high-quality faux arrangements. Rated to safely support typical potting soil and plants at approximately 16.2 pounds per planter, they balance capacity with easy handling.

• 6-gallon capacity per planter for diverse plant selections
• Supports living flowers, herbs, foliage, or faux displays
• Weight capacity about 16.2 lbs each when filled and planted
• Classic neutral finish complements many outdoor styles

How simple is maintenance and seasonal care?

Maintenance is straightforward: remove the inserts to refresh soil, rinse the reservoir to prevent buildup, or store the lightweight planters indoors over winter. Their plastic build resists fading and makes cleaning with mild soap and water quick.

• Lift out inserts for replanting or cleaning
• Wipe clean with mild soap and water; frost-resistant plastic
• Drain holes can be added if you prefer no reservoir
• Ships in multiple parcels; check contents before installation

Who is this for? Homeowners, apartment dwellers, and rental occupants who want to maximize limited outdoor space with full, rail-mounted plantings will appreciate this Pure Garden 2-pack. It’s ideal for those seeking a lightweight, low-maintenance solution that fits standard rail widths and gives flexible drainage options for seasonal gardening, herbs, or long-lasting faux arrangements.