A Tabbed Protection Grille That Fits 4 Inch Duct Without Tools
The tabbed pattern is a wire grille with folded tabs that grip inside the duct collar. No screws, no clips, no separate hardware. On a 4 in duct that matters, because there is barely room to get a driver in beside the collar. It is rated IP44 and weighs 0.2 lbs.
Getting a Wire Duct Grille In and Out for Cleaning
Use it on whichever end of the run sits open, and expect to clear it more often than you would a larger one, because a small bore blocks faster. On a 4 in intake this grille mostly stops the leaf or wad of insulation that would otherwise reach the impeller. It is not a filter, and dust passes straight through, which is the right behaviour at this size. Pull it out by hand to clean it, then push it back. Because it is wire rather than sheet, the pressure penalty is close to nothing even on a small fan. Ruck sizes the tabs to their own collars, so it seats without persuasion.
Key Features
- Tool-Free Tabbed Fit: Folded tabs grip inside the collar, so nothing is drilled or screwed.
- High Free Area: Wire construction costs far less static pressure than a pressed sheet.
- IP44 Rated: Rated against dust ingress and splashing water.
- 4 in Duct Fit: Matches Ruck 4 in collars and standard 4 in ducting.
- 0.2 lbs: Adds no meaningful load to the duct or its supports.
- Pulls Out by Hand: Cleaning takes seconds, which is why it actually gets done.
Technical Specifications
| Specification | Value |
|---|---|
| Duct Size | 4 in |
| Type | Tabbed wire grille |
| Mounting | Push-fit tabs, no fasteners |
| Protection Rating | IP44 |
| Weight | 0.2 lbs |
| Function | Debris and pest exclusion |