Quick Take
Cement concrete masonry projects move faster when the mortar joint is consistently sized. These four spacer options all do the same core job: helping you lay brick, block, cinder block, or concrete units with an even joint. The real question is how many spacers you need, and that's tied directly to how many courses or blocks you plan to set. Start with your project's square footage of masonry, then match that to a pack size.
Price Comparison
| Product | Price | Bar |
|---|---|---|
| 1000 MASONRY MORTAR JOINT SPACERS for DIY Block & Bricklaying | USD 200.00 | |
| 500 MASONRY MORTAR JOINT SPACER'S for DIY Block & Bricklaying | USD 100.00 | |
| 100 MASONRY MORTAR JOINT SPACER'S for DIY Block & Bricklaying | USD 20.00 | |
| MASONRY MORTAR JOINT SPACER'S for DIY Brick Mailbox easy cinder block laying | USD 20.00 |
Decision Matrix
| Project type | Best match |
|---|---|
| Small repair or a short block row | The USD 20 block and bricklaying pack |
| Brick mailbox or focused cinder block project | The USD 20 brick-mailbox pack |
| Medium wall or several courses | The USD 100 mid-size pack |
| Large wall or continuous build | The USD 200 large pack |
Product Notes
500 MASONRY MORTAR JOINT SPACER'S for DIY Block & Bricklaying
This mid-size pack contains 500 spacers, sold as 25 packs of 20. It's aimed at the same DIY block and bricklaying work as the 100-piece versions, but with five times the spacer count. The middle count makes it a reasonable fit for a retaining wall, a series of block columns, or a project that falls between the smallest and largest options. The trade-off is that you'll have a lot of spacers if your job is only a few courses, and the mid-size commitment means you're planning for a larger job rather than a touch-up.
100 MASONRY MORTAR JOINT SPACER'S for DIY Block & Bricklaying
This is the entry-count pack with 100 spacers in five packs of 20. It's enough for a short run of block or brick and is the most focused of the two 100-piece options on general block and bricklaying. These plastic spacers have low fire resistance and can melt or deform at high temperatures, so this is not the spacer to use near heat sources. For a small repair or a test run, the 100-piece count keeps your leftover inventory low.
MASONRY MORTAR JOINT SPACER'S for DIY Brick Mailbox easy cinder block laying
This 100-piece option is the one whose title calls out a brick mailbox and easy cinder block laying. The spacers are sized at 3/8 inch by 4 inches, and the pack is sold as 100 pieces. The product title and compatible-with-standard-mortar-joint makeup make it a strong match when the project is a mailbox or another focused cinder-block build. One limitation is that the guidance for a custom mailbox is to buy 200 pieces, so a one-pack order may come up short for a full mailbox project.
1000 MASONRY MORTAR JOINT SPACERS for DIY Block & Bricklaying
This is the large-count choice, with 1,000 spacers split into 50 packs of 20. The title points to the same DIY block and bricklaying use as the others, and the 1,000 count is what you want when you're laying a long wall, several courses of block, or a big brick project. The limitation is the scale: for a modest job, this many spacers is far more than needed, and the overall purchase commitment is the largest of the group. Choose it only when the project size justifies the big box.
Final Recommendation
Pick the brick-mailbox pack when your project matches that title. For general block and bricklaying, start with the entry pack for a short run, choose the mid-size pack for a wall that's more than a few courses, and go with the largest pack for a continuous build or full masonry project.
