Pemko has a minimum order requirement. Orders smaller than the required minimum have a longer lead time as we need to consolidate onto a "stock" order. If you need a faster lead time, simply exceed the minimum order amount.
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And they your installer will rip the depth and face down to those dimensions you mention.
Is there a follow up question that we can perhaps attempt to answer? We take pride in our technical expertise so don't hesitate to ask.
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if we can assist you by answering further questions or with entering this order and please let us know if there is anything else we can help with.