Guggenheim Aviation Partners has ordered two 747-400 Boeing Converted Freighter combi-to-freighter conversions.

Both deliveries will take place in 2008, according to an agreement signed by U.S.-based Guggenheim and Boeing.

In a statement released from Seattle Tuesday, Boeing said Guggenheim previously ordered five 747-400BCF passenger-to-freighter conversions.

Boeing launched the Boeing Converted Freighter program for passenger conversions in 2004.

For the conversion, the 747-400 combi airplane receives a strengthened main-cabin floor, a full main-deck lining and provisions for a new cargo-handling system with an upgraded flight deck.

The 747-400BCF has positions for 30 cargo pallets on the main deck and 32 LD-1 containers in the lower hold -- both comparable volumes to those of a new 747-400 freighter.

It is also capable of seating up to 19 people, an option found on no other converted freighter.

Guggenheim recently leased a converted MD-11 to Martinair in the Netherlands.