Labconco Prefilter Door Protector Cab Unit PK. The Labconco Prefilter Door Protector Cab Insert will fit into the outer ring of a Labconco Prefilter. Simply place the Prefilter inside the protector until you hear or see the 'click' as the Prefilter door material fall into place. The Labconco Prefilter Door Protector Cab Insert is a clean dependable way to lab hood dangerous or contaminated environments. Simply insert the Labconco Prefilter Door Protector Cab Into the 'click' area of your walk-in hood or clave and the 'sacrificial filter protector' will be in place to offer maximum defense against bacterial contamination. Specifications for Labconco Prefilter Door Protector Cab 3951802: Catalog number: 89208-230 Type: FURNITURE Description: PREFILTER DOOR PROTECTOR CAB Supplier Number: 3951802 Package Contents: Labconco Prefilter Door Protector Cab 3951802 / 89208-230 The Labconco Prefilter Door Protector Cab 3951802 is a quality addition to the Labconco lineup. For more great deals on Lab Furniture & Bio-Hoods by Labconco please browse our Labconco Lab Furniture & Bio-Hoods page. Labconco Prefilter Door Protector Cab 3951802 Unit PK