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How to Build a patterned retaining wall with Allan Blocks

"How to Build a patterned retaining wall with Allan Blocks" cover image

Learn how to build walls with Allan Block in this video tutorial. See how to build two-sided patio walls for your landscape, which is a patterned retaining wall, made with Allan Blocks.

Apple's iOS 26 and iPadOS 26 updates are packed with new features, and you can try them before almost everyone else. First, check Gadget Hacks' list of supported iPhone and iPad models, then follow the step-by-step guide to install the iOS/iPadOS 26 beta — no paid developer account required.

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