Lifetime marine grade 3mm stainless steel.  25hp (19kw) rated, 2 or 4 stroke motor.  
 
Low Height - OU8L    
  
260 wide x 135 high x 310 mm long (fore-aft). 
Mounting platform depth (fore-aft) required: 270mm minimum. 
Height from top of timber to mounting platform: 95mm.  
Standard Height - OU8    
  
280 wide x 190 high x 245mm long (fore-aft). 
Mounting platform depth (fore-aft) required: 210mm minimum. 
Height from top of timber to mounting platform: 175mm.