I require help with an IF OR Formula

So basically I am creating a spreadsheet for a budget. I need help creating a formula.

if H5:H7 is less than 2000 then K6 = 300
but if H5:H7 is greater than 2000 but less than 4000, k7 needs to = 600.
and if H5:H7 greater than 4000 then k7 needs to equal 900.

how would this formula be input?