Your search for "FS-248" revealed the following:
NEW Fortinet FS-248D 200 Series 48x 1GB RJ45 4x 1GB SFP Switch
SKU: NSN-8886
Condition: New
Shipping: Overnight Options
Warranty: 365 days
Fortinet FS-248D 200 Series 48x 1GB RJ45 4x 1GB SFP Registrable/Unclaimed Switch
SKU: NSC-0280
Condition: Seller refurbished
Shipping: Overnight Options
Warranty: 365 days