Pups on the way need a little advice

In the hot summer a fan is needed for air movement...I use a plywood floor with 1x12 pine boards and cut them to make a 4 x 4 ft square where the mama dog can climb over...the square box will have the bottom gapped about a 1/2" for air movement and drainage...I also have a 2x4 frame nailed to the corners and they stand about 2 ft above the 1x12 inch boards...I then put a top on it like boards or tarp...I then lean a 4x4 ft plywood to create a gap between the roof and the plywood leaning...that gap stops quite a bit of the heat and most of the heat radiated will blow over the inner roof...I also use the water hose to wash out the floor...I try to do this twice a day to cool the pups off...the floor needs to be clean and dry most of the time...but cleaning/washing it in the hottest part of the day will help to cool them down...the fan will dry the floor but the vaporizing water creates a cooling effect...

Listen to the pups...if they are whimping loudly you can bet they are hot...that is the time to cool them...I check on them when I can...