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

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    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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    4.6 ★★★★★
    Based on 664 reviews
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    Tara
    Carnegie, US
    ★★★★★ 4
    Super Comfortable and Soft
    Color: White, Size: Throw Size - 50" X 60"
    Feels luxurious and silky soft! It is not very thick but does keep me very warm. In fact I have to kick my legs out sometimes when I’m using it. It does shed A LOT! Will need to update after washing to see if that reduces the shedding. But it is beautiful and comfy. Is give it a 7 out of 10 for quality because of the shedding and the top and underneath pieces are only secured on the edges, which makes it move around and I have to grab the edges and shake to get its form back to normal. I would definitely purchase again. Especially if the shedding reduces it goes away after I run it through a wash cycle. I do NOT recommend drying in the dryer. It will mat I can almost guarantee that. Almost all blankets like these do if you dry them in a dryer with heat. Maybe no heat tumble might work, but NO heat.
    WAS THIS REVIEW HELPFUL?YesReportShare
    Reviewed in the United States on November 11, 2024
    R
    Verified Purchase
    rocky
    Dallas, US
    ★★★★★ 5
    Get it fluffy cozy
    Color: Grey, Size: Throw Size - 50" X 60"
    Great quality looks good as a accent to a bed ensemble
    WAS THIS REVIEW HELPFUL?YesReportShare
    Reviewed in the United States on September 20, 2025
    A
    Verified Purchase
    Animal whisperer
    Waukegan, US
    ★★★★★ 5
    THE BEST, LEGIT FLUFFY
    Color: Black, Size: Queen/King Size - 80" X 90"
    This is exactly what I wanted, had to return two other blankets before I found this one. It is SO FLUFFY and soft! The pile is almost 3” long.. it is so fluffy I keep losing my remote control on it. So 5 stars I will continue to buy this blanket for every bedroom in my house we are all girls and we all love big fluffy blankies!!
    WAS THIS REVIEW HELPFUL?YesReportShare
    Reviewed in the United States on March 8, 2026
    A
    Verified Purchase
    Alex Whieldon
    Grantham, US
    ★★★★★ 5
    You will not regret buying this blanket!
    Color: Aqua, Size: Queen/King Size - 80" X 90"
    I was actually looking for a cotton blanket to add to my bed for fall and winter. Then I came across THIS one. It happens to be the exact shade of (“seaglass” or teal or aqua or whatever you choose to call it) blue green that I am currently redoing my bedroom in. It was a teense more than I’d planned to spend on this project. But I was in a splurgey mood so I went for it. I can honesty say that I’d happily pay twice as much. It’s much more beautiful and much more insanely soft than it looks in the pictures. While I don’t know how the blanket feels about me, I can assure you that I am madly in love with this gorgeous thing! I can’t wait for it to cool off in Southern California so I can roll myself up in it. Maybe I’ll crank the A/C down to 50 degrees and pretend there are more than two seasons (summer and late summer) in California. Anyway, this would make a great gift. It would make a great gift for yourself. Self care is important! Spoil yourself! You, at the very least, deserve a cozy cuddly blanket. I’m certain that this luxurious blanket will cure insomnia. Maybe even depression. I’ve owned it for like 2 hours and I have a whole new outlook on life! I feel pampered, spoiled, like queen of the world, maybe even like Cleopatra! I think that it should be obvious by now that I’m giving this furry looking blanket two thumbs way way up! Sometimes I order things from Amazon and by the time they arrive Ive already forgotten about them. I was anxiously awaiting my blanket friends arrival and I was prepared to be very meh. Not this time! Nope! Best purchase ever! I know what I’m getting everyone for Christmas! Buy several for future use. This blanket has made me deliriously happy! Update: After owning this blanket for, like, a while, I still love it. Shockingly it washes up beautifully! A word of advice. Fabric softener is a big no no. It gets the fur gummy and feeling like unwashed hair after a month. I imagine. I’ve personally never gone with unwashed hair for more than a day or two. It is at its fluffy and soft best when you use one of those new Downey rinses instead. That seems to remove all residue and it comes out feeling even better than brand new. A word of warning. Do not picnic on this blanket. The fur will encase and preserve your crumbs better than Tupperware. You may find a lost treasure that you don’t actually want in there. Best used for sleeping only.
    WAS THIS REVIEW HELPFUL?YesReportShare
    Reviewed in the United States on October 12, 2024
    E
    Verified Purchase
    Experienced Reviewer
    Phoenix, US
    ★★★★★ 5
    So soft and pretty Looks great!
    Color: Aqua, Size: Throw Size - 50" X 60", Color: Aqua, Size: Throw Size - 50" X 60"
    This blanket is wonderful. I'm not sure if it will last or wash well but it's amazing right now. I was looking for something that had a sort of aqua color that would go with my new sheets that are aqua but still blend with my comforter which has more blue tones in it. This worked great as far as the color. I took some pictures and my dog is in them because as soon as I put it on the bed she jumped up and was like "oh thanks Mom ...I love this" That is how soft and luxurious this feels. Others said theirs was shedding. I took mine out of the bag and shook and no shedding. I did have trouble getting it out of the plastic and cut a few pieces with the scissors but once I got it started I just pulled to rip the plastic. I took one pic so you could see the back. I would say it's like a fuzzy microfiber and the color is identical. It's just te right thickness. I love the design. It's warm to lay under but also has a warm look. It was a good value at just under $30. I know some people said it did not wash well but I'll be super careful when I wash it and even though it says hang dry I might tumble on a very low or cool dryer so that it does not mat. If it's a disaster I'll come back to report but prob wont wash it for a few months. Oh and no weird smells out of the bag so that was a plus for me since I have chemical sensitivities.
    WAS THIS REVIEW HELPFUL?YesReportShare
    Reviewed in the United States on March 19, 2026

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