b737 400f topmyndMain deck cargo door:
Height Forward: 202 cm
Height Mid: 210 cm
Height Aft: 210 cm
Width: 340 cm

Max Cargo Capacity
Max. Payload: 19.237 kg
Main Deck Total: 115,5 m3
Per Pallet - 125" x 88": 13 m3
In position 10: 21,7 m351.255 kg
Lower Deck Forward: 12,77 m3
Lower Deck Aft: 17,2 m3

 

Other Data
MZFW: 54.884 kg 
MLGW: 64.636 kg 
MTOW: 3.850 km
Maximum Range: 3.850 km
Typical Cruise Speed at 35.000 feet:
0,745 Mach, 495 mph (797 km/h)

Cargo Loading Systems

ANCRA cargo loading system 84670-10:
There are ten (10) Unit Load Device (ULD) positions in this system - possible use: 
Ten (10) 88" x 125", thereof nine (9) in full height (88" x 125" x 82" / pos 1-9) and one (1) 88" x 125" x 64"(pos 10K) or ten (10) 88" x 108" (full height) ULD's or a combination thereof. 

Nine (9) 96" x 125" (full height).