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Meet the Terrawagen Bug Barrier Window Vent (No-See-Um 20x20 Mesh), a finer-mesh version of our original Bug Barrier designed for customers who want added protection from smaller insects while still getting clean airflow.
Each vent features a built-in 20x20 fine mesh screen over every opening to help keep out no-see-ums and other tiny bugs that can sneak through standard screens. The vent body is made from durable, paintable ABS plastic for all-weather use and a secure fit.
Installation is simple. Roll down your window, twist, and slip the vent into place, then roll up the window.
Sold in pairs. Each set includes one driver side and one passenger side vent for balanced airflow.
Storage bags located here.
US Patent No: US 11,858,317 B2
Mercedes Sprinter
| Model | Fits | Notes |
|---|---|---|
| Mercedes Sprinter (2007–2026+) | ✓ Yes | Installs in front window channel (driver or passenger) |
Ford Transit
| Model | Fits | Notes |
|---|---|---|
| Transit 150 / 250 / 350 (2015–2025+) | ✓ Yes | Cargo and passenger vans only |
| Transit Connect / Custom / Courier | ✕ No | Different window profile |
Ram ProMaster Platform
| Model | Fits | Notes |
|---|---|---|
| Ram ProMaster (2006+) | ✓ Yes | Also fits global equivalents |
| Fiat Ducato / Peugeot Boxer / Citroën Jumper (2007+) | ✓ Yes | Shared ProMaster platform |
| ProMaster City | ✕ No | Different window geometry |
| Vehicle | Overall Size | Taper |
|---|---|---|
| Sprinter | 22 in. x 10 ⅝ in. x ¾ in. | 10 ⅝ in. to 10 in. |
| Transit | 17 ¼ in. x 9 ½ in. x ¾ in. | 9 ⅛ in. to 8 ⅞ in. |
| Ram ProMaster | 17 in. x 9 in. x ¾ in. | 9 ¼ in. to 8 ⅞ in. |
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