I am doing a stair remodel inside my home. Would this be weird inside the house? How difficult is it to cut the length down to a size I need?

Hello, and thank you for your interest in Trex! Although, we would love to be a part of your next project, our railing systems which are guardrails opposed to handrails, are intended for exterior use on decks, balconies, porches, stairways, etc. Our recommendation would be to use such products outdoors. We hope that you find this information to be helpful. Thanks, Casey - Trex Customer Care Team