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Keep your deck surface as smooth, clear, and unblemished as the day it was built with the durable Mantis Clip hidden fastener system. Mantis Clips directly attach your deck boards to your joists via a groove in the side leaving the tops of your boards clean and untouched while providing a secure hold day in and day out. Mantis Deck Clips automatically space deck boards 3/16 of an inch apart for a consistent look and beautiful appearance throughout your outdoor project.

Crafted from solid powder-coated steel or stainless steel (for coastal applications), Mantis Clips also elevate your deck boards off the joist surface to reduce rot and load stress. No more rising deck nails catching feet or shovels, just a cost-effective fastening system that is completely concealed to let your deck shine.

Mantis Clips work with virtually grooved edge decking by offering 5 different groove heights:
Mantis 320 is designed for boards with a 0.325 inch groove height
Mantis 345 is designed for boards with a 0.353 inch groove height
Mantis 385 is designed for boards with a 0.380 inch groove height
Mantis 396 is designed for boards with a 0.406 inch groove height
Mantis for Trex is designed for boards with a 0.396 inch groove height

Mantis Clip with Standard Screw packs of 90 include 90 Mantis Clips, 5 Starter Clips, 5 Finish Clips and screws to cover 50 square feet.

Bulk Packs of Mantis Clip with Standard Screws include 450 Mantis Clips and screws to cover 250 square feet.

Installing non-grooved decking material? Use the Router Bit by Mantis, to create the board groove you want.
Keep installation time low and install using the Eliminator Fastening Tool by Mantis.


DecksDirect # 5278
sure drive

Installation Instructions (382 KB) 

Warranty (14.4 KB) 

Decking CompatibilityHardwoods, Cedar, and Redwood

Composite and PVC Decking (772 KB) 

Screw & Fastener MaterialPowder coated stainless steel or Powder coated steel
Gapping3/16 in between boards
Deck Board Groove HeightMantis 320: 0.325 in groove height
Mantis 345:
0.353 in groove height
Mantis 385: 0.380 in groove height
Mantis 396: 0.406 in groove height
Mantis for Trex: 0.396 in groove height
Groove Heights are measured from the bottom of the deck boards
Click here for recommended groove height
Pack Size90 pack or 450 deck pack
Coverage Estimate90 pack: approximately 50 sq ft
450 deck pack: approximately 250 sq ft
when using a 5-1/2 in deck board and (16 in) on center joists
A clip is needed at every intersection of joist and deck board
Package Contents90 pack: (90) clips, (5) starter clips, (5) finish clips, and square drive screws
450 deck pack: (450) clips, square drive screws
WarrantyView Mantis Warranty
Starter Clip by Mantis
Starting at: $15.99
Finish Clip by Mantis
Starting at: $15.99
Transition Clip by Mantis
Starting at: $18.99
Hand Drive Screws for Mantis Clips - Steel Square Drive
Starting at: $11.99
Mantis Router Bit
Starting at: $66.99

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