From AAF, these permanent holding frames are for field or OEM assembly of built-up HEPA/ULPA front-loading and gel-seal filter banks. 

The B-1 Frame is a tough and corrosion-resistant permanent holding frame. It's designed for field or OEM assembly of built-up HEPA/ULPA front-loading gasket-seal filter banks. The frame is created with an all-welded steel construction and available in a variety of sizes.

The FASeal Attic Housing has a unique design that makes filter installation quick and easy. Separate clips are not necessary since the fully integrated compression holds the filters firmly in place. The 3-piece housing breaks down, allowing for ease of handling when installing in tight spaces. A full bottom provides additional backdraft protection, as the opening can be cut for a custom fit in a variety of applications.

The FASeal M Grid has a unique design that makes filter installation quick and easy. Separate clips aren’t necessary since the fully integrated compression holds the filters firmly in place. This grid will hold a variety of filters, including the VariCel VXL, Biocel VHXLA, PerfectPleat and PerfectPleat ULTRA. The FASeal M Grid is welded together to create leak-free filter housings, ideal for agricultural applications. 

The FASeal P Grid has a unique design that makes filter installation quick and easy. Separate clips aren’t necessary, since the fully integrated compression holds the filters firmly in place. This grid will hold a variety of filters and is ideal for agricultural applications.