Tjernlund 4-in Secondary Dryer Lint Trap is backordered and will ship as soon as it is back in stock.
Catch additional lint that passes through your dryer’s internal lint screen with the Tjernlund 4-Inch Secondary Dryer Lint Trap. Installed just above the dryer, the secondary lint trap fits to any four-inch diameter ducting between 30 – 150-feet when the booster fan is less than 15 feet from the dryer exhaust connection.
Easily access the internal mesh screen with the removable pull-out front door, and a viewing window lets you see when it’s time to clean the filter. This secondary lint filter works with the following dryer booster fans:

