Stainless steel freezer rack holds 15 mL tubes without the need for boxes. Each rack has two drawers.
Genesee Scientific 27-304, Upright Freezer Rack, 16-Place 4L x 4H
Cole-Parmer Essentials Upright Drawer Freezer Rack for 0.2 mL Tube
Cellstar 15 mL polypropylene conical screw cap centrifuge tubes, Greiner Bio-One, sterile.
15 mL Conical Screw Cap Tubes, Greiner Bio-One
120-Place SS Rack for 15ml Tubes - STARLAB
Stainless Steel Laboratory Freezer Drawer Rack for 2 Inch Cryo
780-TD-15ML Custom Upright Freezer Drawer Rack for 15mL Tubes
Heathrow Scientific 15 and 50 mL 2 x 3 Upright Freezer Rack
Argos Technologies Upright Freezer Drawer Rack for 2 Cryoboxes, Holds 12 Boxes, Stainless Steel, 3 x 4 (1 Rack) RD342A
Freezer Rack Drawers
Upright Freezer Racks with Drawers for Deepwell Plates
Upright Freezer Box Racks For 2 Boxes