Yes. As we've shared already, our more challenging margin profile for the fourth quarter has been our Siding or Surface business. And as we mentioned, just about all of it has to do with the mismatch between the higher priced inventory that is unfortunate that warehouses and the lower demand that we've been experiencing. As we work that through in the first quarter, certainly, first quarter will, in our view, we'll continue to see somewhat compressed margins. But we think through the first quarter, we will work all of that off. Now what will remain in the business is some of the permanent inflationary factors that now come into our business, including labor and other inflationary costs, but that's where we will continue to work with our factories for improved efficiencies and other improvements. We anticipate that we will be going back to more normal rates of high teens and low 20s in terms of margins, but it will work itself over throughout the year. As it pertains to Shelter business, as we've said, we had record margins in the last quarter. It's a combination of the raw materials and how -- what we're experiencing. But relative to history of low teens margins for this business, we believe we have installed some permanent improvements in how we actually manage that business. Our pricing processes, how we gather competitive data, how we make decisions, how we analyze what the different market sub-segments can bear and combination of our speed of reaction to the market dynamics and steel price and the decisions that we make, we believe we have now elevated the margins of this business from historical low teens to something in the mid-teens range. And that, I think under more normal circumstances, certainly, the 21% plus margins is not sustainable, but something that is several points higher than our history in mid-teens, is what we expect this business to be able to perform to 21:02. And then lastly, in our Windows business, certainly, we had some in-quarter challenges in the last year, with the lower margins that we experienced then. As we mentioned, our workforce, our operating cadence have returned to more normal times, and we've been able to recover just about most of those margins as we've shown in our last quarter's performance. We are able to hold our price in Windows, which we anticipated certainly, that doesn't exclude some of the pricing actions and the discussions that are taking place in the marketplace. But overall, given the mix of our remodel and new construction and different channel dynamics, we are currently able to hold our price that we've installed in the previous quarters and previous years.