SKU: 73266754489
square planter inserts for large pots

square planter inserts for large pots Seeley Cube Planter

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Description

square planter inserts for large pots Seeley Cube PlanterSeeley Cube Fiberglass Planter Steel Reinforced Large Block for Indoor Outdoor Plants and Trees. Entryway, Patio, Privacy, Balcony One Planter Unlimited Possibilities Material: Professional grade fiberglass for extreme durability and a refined aesthetic. Structural Integrity: Internal steel reinforcement on 20", 24", and 30" sizes to ensure perfectly straight walls. Application: Versatile design for privacy screening, spatial division, and entryway

Seeley Cube Fiberglass Planter - Steel-Reinforced Large Block for Indoor /Outdoor Plants and Trees. Entryway, Patio, Privacy, Balcony

One Planter - Unlimited Possibilities

  • Material: Professional-grade fiberglass for extreme durability and a refined aesthetic.

  • Structural Integrity: Internal steel-reinforcement on 20", 24", and 30" sizes to ensure perfectly straight walls.

  • Application: Versatile design for privacy screening, spatial division, and entryway framing.

  • Indoor / Outdoor: Beautifully finished, and optimized for high-traffic commercial interiors, rooftop decks, and expansive outdoor patios.

  • Finish: All Weather UV-resistant architectural matte finish available in Classic White, Grey, and Black.

  • Durability: Engineered to be shatterproof, frost-proof, and fade-resistant for year-round exposure.

  • Weight: High strength-to-weight ratio allows for easy placement while maintaining stability.

  • Drainage: Equipped with pre-drilled drainage holes and removable rubber plugs.

  • Free Fast Shipping - All Orders. 30" Cube - 7/10 Pre-Order

Why Designers Choose the Seeley Cube

The Seeley Cube is the foundational choice for anyone who appreciates clean, minimalist geometry. If you have ever seen a standard plastic planter warp or fade after a single season, you will appreciate the industrial-grade difference here. It is designed to be a permanent, design-forward extension of your architecture.

In professional settings, these are most often used to create a "ceremony of arrival" at entryways or arranged in a rhythmic series to create a "living wall." Because the lines are so crisp and the matte finish so refined, the Seeley Cube defines space—like an open-plan office or a sprawling patio—without adding visual clutter. It anchors the environment, allowing your greenery to take center stage.

The Science: Why Steel-Reinforcement Matters for Large Planters

Most large planters suffer from "bellying"—a phenomenon where the sides bulge outward once filled with heavy, wet soil. This ruins the architectural silhouette. To prevent this, NMN Designs integrates internal steel reinforcement into our 20", 24", and 30" models.

This engineering ensures that even when housing a heavy, mature tree, the walls remain perfectly plumb and vertical. Combined with our commercial-grade fiberglass, you get a vessel that handles extreme thermal expansion (from scorching summers to sub-zero winters) without the cracking or brittleness found in standard resin or plastic pots.


Engineered for Performance: Indoor and Outdoor Versatility

The Seeley Cube transitions effortlessly between environments. For interior use in a foyer or gallery, keep the rubber plugs inserted for a watertight seal. For outdoor installations on a deck or patio, simply remove the plugs to ensure vital drainage and oxygen for the root zone.

Recommended Tree and Plant Pairings by Size:

  • 14" Cube (Medium): Ideal for architectural foliage and "tree-like" indoor plants. Best for Snake Plant, ZZ Plants, or a Spider Plant. Perfect for office corners or flanking a residential console table. Outdoor - Ornametal Grasses, Small Plants.

  • 20" / 24" Cube (Large and Extra Large): The perfect size for entryway ceremony and ornamental trees. Ideas include Evergreens and Boxwood Topiaries, Ornamental Grasses, Olive Trees, or Fiddle Leaf Figs. For a vertical architectural look, Sky Pencil Hollies are excellent.

  • 30" Cube (XXL -Extra-Large): Designed for specimen trees and high-impact privacy. This volume is required for larger trees such as Japanese Maples, Dwarf Citrus (Lemon/Lime), or Serviceberry. To create a privacy screen, plant a series of Emerald Green Arborvitae or Tall Ornamental Grasses.


Pro-Tips for the Best Results

  • High-Wind Stability: For exposed roof decks or coastal balconies, add 3 inches of heavy gravel at the base before adding soil. This lowers the center of gravity, ensuring your privacy screen stays upright during heavy gusts.

  • Thermal Protection: While the fiberglass is frost-proof, using an insulated liner inside the planter in extreme northern climates can help protect the root balls of perennial trees, ensuring they return season after season.

The Seeley Cube Planter is made in India by NMN Designs®

Indoor Planter Box - Medium (14") to Extra Large (24")

    Size Specifications

    • Medium Planter - 14" L x 14" W x 14" Tall 
    • Large Planter - 20” L x 20” W x 20” Tall
    • Extra Large Planter - 24" L x 24" W x 24" Tall
    • XXL Planter - 30" L X 30" W X 30" Tall  (Black Only)

    Internal dimensions are 1/2" less for L x W x H

    Save Extra 10% OFF Entire Order ($125 Minimum) with Code GET10

    Enjoy always free, fast shipping. Typically within 2-3 business days.

    Shipping Notes
    • Free Standard Shipping on $100+ Orders to the USA.
    • Except Preorder products are shipped in 48 hours.
    • Delivery to the USA:
    1. Standard Shipping : 3-10 business days
    • If time is of the essence, please consider selecting expedited delivery for faster service.
    Exchange/Return Notes
    • We offer a 30-day return/exchange service after receiving.
    • Final sale items are not eligible for returns or exchanges.
    • To process your return/exchange, please contact us at [email protected]
    • Please click here for more details>>> Return & Exchange Policy
    SKU: 73266754489

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    Lynn M
    Birmingham, US
    ★★★★★ 3
    Disappointed.
    Color: Blue, Size: Large, Color: Blue, Size: Large
    This sweater is so comfortable and very soft. It fits well in a flattering, oversized way. But after one wash it is pilled everywhere which makes it look old and shabby. It’s at a price point where I feel compelled to return it.
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    Reviewed in the United States on January 10, 2026
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    TripletMama Heather
    Lexington, US
    ★★★★★ 5
    Perfect for casual wear and dressy style
    Color: Dark Green, Size: Small
    This sweater is soooo soft and the color is so rich. The fit of it is perfect, not too tight and not too baggy, just right and I used the size guide to pick my size. Just for reference, I am 5'3" and 130lbs, 38C bust. It's well made and washes great. I chose to hang dry mine as I typically don't put any of my sweaters in the dryer to dry, just to fluff them. I have this one in two colors, the green and the tan/beige and I would say they are both a true representative of the color shown.
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    Reviewed in the United States on November 15, 2025
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    MMF
    Bozeman, US
    ★★★★★ 5
    Love the long sleeves!!!
    Color: White, Size: Small
    Love it! I'm 5' 11" tall and I purchased this according to reviews. Several people commented on the length of the sleeves. I have a hard time finding sleeves long enough if it's not " tall" sized. It was perfect for me. If this washes nice I'm going to consider purchasing more in other colors. I ordered the white and just love the long ribbed cuffs with the line of buttons. Very soft.
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    Reviewed in the United States on May 1, 2026
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    Cindee
    New York, US
    ★★★★★ 4
    Nice cozy sweater, but handwashing is recommended
    Color: Beige, Size: Medium
    Soft and cozy, but does not wash well. Goes with everything. This sweater fits well and looks great. I received lots of compliments while wearing it.
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    Reviewed in the United States on April 23, 2026
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    Hillary K
    Battle Creek, US
    ★★★★★ 5
    Great sweater for winters in the Midwest
    Color: Black, Size: X-Large
    Love this sweater! I went back and got another color! The fit is true to size and very comfy. The button detail on the sleeves just adds a little pizazz. The weight of the sweater is perfect for winters in the Midwest.
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    Reviewed in the United States on May 30, 2026

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