who pays for window guard installation?

[Yan Yan]

hi BPers,

I have a potential tenant who has a 9 yr old kid. the unit is on second floor. law requires that if the tenant makes a written request to install window guard, I need to do that, which I don't mind. The question is, who should pay for the cost, including the window guard itself and the installation cost? the law doesn't specify. What's the common practice in New Jersey?

thank you very much for your inputs!