Description
For a quick and reliable way of attaching wire mesh to solar panels, nothing beats CritterBlok!
Why choose CritterBlok
- Securely clamps to any solar panel frame with a “lip”
- Provides a rigid surface for wire mesh critter guards to attach to using included screws
- Superior resistance to snow, wind and debris loads which normally risk pushing mesh/clips under the PV array
- Suitable for metal roofs and other situations where wire mesh cannot be supported by the roof
- Compared to other products, uses less clips per linear foot to achieve the same strength (one clip per 32″ of fencing recommended)
- 100% stainless steel stands up to corrosion and UV light
- Allows for easy service of the PV array after installation; remove screws pinning mesh to clip, and the PV module can be lifted without disturbing wire mesh
New & Improved CritterBlok V2
After selling their popular V1 clip for several years and gathering customer feedback, CritterBlok made a major update to the clip in summer 2026. The main V2 improvements are:
- New clamping mechanism grips the solar panel frame securely, eliminating wobble
- Less sensitivity to wire mesh positioning; mesh new attaches to the clip using 1 or 2 screws which can be inserted in any of 6 holes. The holes are cleverly positioned such that there is always one available regardless of mesh position.
- The clip is sold in 50-packs rather than 100-packs to make it more accessible for customers working on smaller jobs. Each box of 50 clips comes with 120 fasteners for attaching mesh to clips.
Using CritterBlok V2
CritterBlok recommends attaching one clip every 32″ along the PV array perimeter. Multiple layers of wire mesh can be fastened to the same clip, so it works well as a splice when joining two lengths of wire mesh. Alternatively, you can splice two lengths of mesh using CritterBlok’s classic wireforms or our hog rings.
Read the CritterBlok V2 installation manual here.
Comparison of Wire Mesh Fasteners
| Slick Tools Screws | Solar Armor J-Hook | SnapNrack Clip | CritterBlok V2 Clip | |
|---|---|---|---|---|
| How well is Mesh Secured | Excellent | OK | Good | Excellent |
| Max Span Between Attachments * | 36″-72″ | 24″ | 30″ | 32″ |
| Ease of Installation | Difficult | Easy | Moderate | Moderate |
| Compatibility with Railless Racking | X | ✔ | ✔ | ✔ |
| Compatibility with ‘lipless’ PV Modules | ✔ | X | X | X |
| Ease of PV Array Service | Easy | Difficult | Moderate | Moderate |
| Reusable (if removed for service) | ✔ | X | ✔ | ✔ |
| Cost – Typical Job** | $19 (100 screws) | $48 (100 clips) | $156 (80 clips) | $180 (75 clips) |
** Assumes PV array with 200′ perimeter; fastener bulk pricing as of July 2026.






Reviews
There are no reviews yet.