Oldcastle 162004551 Castlewall Retaining Wall Block 12 in

Product Description

The OLDCASTLE 162004551 is a 12-inch gray Castlewall stackable retaining wall block designed for mortar-free landscape construction. This solid masonry unit stacks without adhesive or mortar, making it practical for straight or curved wall configurations. It is a common choice for landscape contractors, hardscape installers, and experienced DIYers building low-profile outdoor structures. The block suits residential and light commercial landscape applications where a clean, structured border or wall is needed without the complexity of wet-set masonry work.

This block is used to build planters, garden borders, tree rings, and small freestanding retaining walls. Its geometry supports both straight runs and radius curves, which gives installers flexibility on irregular site layouts. The recommended maximum wall height is 2 feet when stacked without mortar or engineered anchoring systems. It is sold as a single unit and is typically ordered in bulk pallet quantities for larger landscape projects.

Key Features

• Mortar-free stackable design allows dry-lay installation without adhesives
• Compatible with straight and curved wall layouts
• Suitable for planters, garden borders, tree rings, and small retaining walls
• Gray finish blends with standard landscape and hardscape color palettes
• Recommended maximum wall height of 2 feet for unsupported stacked applications
• Sold individually; package quantity of 126 units per pallet

Compatibility

Designed for use in residential and light commercial dry-stack landscape wall applications including planters, garden borders, tree rings, and low retaining walls up to 2 feet in height.

Installation Notes

Landscape contractors and hardscape installers typically handle installation of stacking retaining wall blocks. Before beginning, prepare a compacted gravel base to ensure proper drainage and level footing for the first course. Do not exceed the manufacturer-recommended maximum wall height of 2 feet without consulting a structural engineer or using an engineered retaining wall system. Local building codes may require permits for retaining walls above a specified height, so verify requirements before construction.

Technical Specifications

• Length: 12 inches
• Color: Gray
• Weight: 3276 pounds (pallet)
• Package Quantity: 126 units per pallet
• Unit of Measure: Each
• Maximum Wall Height: 2 feet (mortar-free stacked application)
• Installation Type: Mortar-free dry-stack

Standard Information

• Brand: OLDCASTLE
• Manufacturer Part Number: 162004551