If you disconnect the hose and insert the red stopper plug into the outlet of the diverter, the minimal amount of water that freezes inside the diverter body will not damage the diverter. The diverter is designed to redirect a small amount of water into the outlet as it spirals through the downspout. Once it is capped off a very small amount of water will be trapped and able to freeze. This small amount of water will have plenty of room to expand as it freezes without causing expansion damage to the diverter. 
100% silicone caulk is recommend. There are many conditions where plumbers putty could cause product failure and finished product staining, please refer to category #4 FAQs for these applications.
After the finished height of the No-Caulk Shower Drain is determined as described in the installation instructions, the finished vertical drain height will be ¾” below that. Contact our customer service department and they will be happy to send you a copy of the instruction sheet and exploded view drawing. 
Stainless steel
#10 x ¼” 
The Closet Flange Spacer Kit is used when the finished floor of your bathroom is higher than the bottom of the existing toilet flange.
Yes. The Square Snap-Tite strainers can replace round Snap-Tite strainer.
Polished Brass / Satin Nickel / Satin Chrome / Antique Bronze / Rubbed Bronze / Matte Black
Yes. The Moss Bay Replacement flange is designed specifically for this application.
The flat side of the gasket should be at the bottom of No-Caulk drain body, seating onto the inside lip of the body. The beveled side of the gasket will be facing up.