Is this door insulated?

Reliabilt steel doors typically use a foam or polyurethane core, but this listing does not state an R-value. Ask the store for the door's insulation spec before buying for a cold climate.

Does the full-lite glass come with blinds or grilles?

The listing shows a plain full-lite panel with no blinds or grilles. If you want privacy, plan on a curtain, film or a different model with built-in blinds.

What size opening does it fit?

It is a 36 in x 80 in door with a 4-9/16 in jamb, sized for a standard 2x4 wall rough opening. Measure your opening and check the jamb depth before ordering.

Is the door prehung and ready to install?

Yes. It is prehung, so the slab comes in its frame with the jamb. Hinges and a lockset prep are typical, but confirm the handing and whether a lockset is included.

Can I paint a steel door?

Yes. Steel doors take exterior paint well. Clean and lightly scuff the factory white finish, then use a good exterior paint for the color you want.

How does it compare with a fiberglass front door?

Fiberglass resists dents and moisture better and often carries a longer warranty, but it usually costs more. Steel is cheaper and stiffer, yet dents can be hard to repair and it needs a well-sealed paint job.