The BL 3400 offers a keypad with a lever handle on the outside of the unit and a plain lever handle on the inside, this model is ideal if coded access is only required on one side of the gate. From the inside of the gate the user can easily turn the handle without having to enter any code and exit through the gate. On gate code change Black marine external grade coating (MG Pro) 1000 hours salt spray tested Suitable for external metal, box section gates Suit gate profiles 40-60mm Spring loaded latch adjustable between 65-80mm Over 4000+ combinations