Product Description

Our 3 Piece Square Concrete Planter Mold Set is built for professional concrete planter production. Featuring durable fiberglass outer shells and precision silicone liners, these molds are designed for smooth demolding, repeatable results, and long-term use. The set produces a Large Planter (17" L × 17" W × 21" H), Medium Planter (15" L × 15" W × 18" H), and Small Planter (13" L × 13" W × 15" H).

Ideal for studios, concrete businesses, and production environments creating premium concrete planters for residential, retail, hospitality, and commercial projects.

Specifications

• Built for repeatable production and commercial durability
• Fiberglass reinforced outer shells maintain consistent shape and structure
• Properly maintained molds can achieve 400+ uses
• Precision silicone liners create smooth, professional surface finishes
• Modern square planter design with strong architectural appeal
• Built in air release holes allow easy demolding using an air compressor if necessary
• Integrated drainage hole system
• Industrial grade construction engineered for efficient production
• Produces premium square concrete planters with a clean modern aesthetic

Planter Dimensions Produced

• Large Planter: 17" L × 17" W × 21" H
  
• Medium Planter: 15" L × 15" W × 18" H
  
• Small Planter: 13" L × 13" W × 15" H

These molds are designed for serious production environments focused on creating consistent, high quality architectural concrete planters.

Preparing the Mold

Assemble the fiberglass mold and securely tighten all bolts before pouring.

Ensure the silicone liner is seated properly inside the mold to achieve clean corners and smooth surface finishes.

Pouring the Concrete

Mix your concrete to the desired consistency.

Pour evenly into the mold while keeping the silicone drainage button visible. Do not pour above this level, as the button forms the planter drainage hole.

Lightly vibrate or tap the mold to help release trapped air bubbles and improve finish quality.

Curing

Allow the concrete planter to fully cure before demolding.

Typical curing times range between 24–48 hours depending on your concrete mix and environmental conditions.

Demolding

Remove all bolts from the fiberglass shell.

Carefully separate the fiberglass shell from the planter. If the mold feels tight, place an air compressor nozzle into the built in air release holes and apply pressure to help loosen the shell.

Once removed, slowly peel the silicone liner away from the planter until fully separated.

Finishing Touches

Each planter includes a built in drainage hole.

Light sanding or edge refinement may be performed if desired for a cleaner finished appearance.

Care and Maintenance

Clean molds after each use with mild soap and water.

Store molds in a cool, dry area away from direct sunlight exposure.

With proper care, these molds are built to withstand hundreds of pours and long term production use.

When you order the 3 Piece Square Concrete Planter Mold Set, your package will include:

• One Large Square Planter Mold
• One Medium Square Planter Mold
• One Small Square Planter Mold
• Fiberglass Outer Shells with built in air release holes
• Precision Silicone Liners for smooth finishes and efficient demolding
• All Required Hardware including bolts and fasteners for assembly

Each mold system is produced to order to ensure consistent quality, precision, and production standards.

Please allow approximately 4–8 weeks for production lead time and freight delivery. Tracking information will be provided once your shipment is in transit.