Safety is never to be taken lightly. A customer may be just another face in the crowd to you, but to someone else they are a husband, wife, mother, father, son or daughter. THINK long and hard about this for a moment: Could you live with yourself after knowingly installing a potentially unsafe product and later hearing about the customer passing away after sustaining fatal injuries in a traffic accident?
Do the right thing, use tested and approved products, just like vehicle manufacturers do.