sounds good, yea we will have more than a few pups, I have a pup pen, but I don't want them all in there at once obviously. Plus I'll have a litter that I'll whelp in the house around June, and I'm sure I'll be ready for them to scoot their butts out the door by 6-8 weeks with the exception of at night. I'm thinking that actually using the rubber matts like we had planned in the pup pen would be just as good as grates, I'm not really fond of grates myself, although the cleaning method was great it always left pups paws slayed and low pasterns.
8-10 sheets seems like alot but I'm sure after its all said and done that would be about what you would need, although I'm going to check them out again. Depending on the size though, which these pens seem to be pretty big, about 16 ft long I'm assuming since plywood comes in 8ft sheets, it seems you would need, 2 for top, 2 for the bottom, 2 for the back. 1 for both sides and one for the center. Do you know the dimensions?
Are there housing spots in the back as well with the holes cut out for the dogs to go into? this is the only way I can see that that many sheets would be relevant.
Regardless I really like the plans, and I think we're gonna start on some of those pretty quickly and have a couple up by mayish.