Our flagship model, the 24”x24” custom built-to-order Laminar flow hood features a 24” x 24” x 6” 99.99 to .3 microns HEPA filter. The flow hood is powered by a Dayton squirrel cage blower and includes a pre-filter. The unit is constructed from half-inch cabinet-grade birch plywood cut using lapped miter routers that create self-indexing joints. This improved construction process provides more surface area for adhesion resulting in a superior bond and airtight construction. The cabinet has two coats of low VOC water-based polyurethane finish creating a low maintenance surface. The HEPA filter is protected by a powder-coated aluminum grill. The grill can be removed for easy replacement of the HEPA filter when the time comes, typically after five years of average use. Overall dimensions are 25"x20"x38" weighing in at 75 pounds. Comes fully assembled, ready to plug and play.