Precision Accuracy
Integrated spacing features ensure every board locks in with consistent, uniform gaps, giving the entire deck a clean and professional look from edge to edge.
Gapper
Deck Board Spacer
Gapper is FastenMaster’s precision spacing tool that quickly aligns and evenly gaps multiple deck boards at once, ensuring consistent, professional-looking installs with less measuring and guesswork.
Gapper
Deck Board Spacer
- Precision Accuracy
- Fail-Safe Tension
- Lightweight & Durable
Zip Hidden Fastening System
Fail-Safe Tension
Engineered tension keeps clips firmly seated and prevents over-pulling, protecting boards from stress, warping, or damage while maintaining secure placement throughout installation.
Lightweight & Durable
Constructed from high-strength, corrosion-resistant materials that stay light in the hand but tough on the job, delivering reliable stability and longevity in any environment.
Find out more about the entire Zip Hidden Fastening System
documentation
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Part Numbers
| SKU | Packaging Quantity |
| FMGAPPER-2PK | 2 Gapper tools, 4 additional spacers |