Thanks for posting. Are you just measuring the metal channel, not including the end attachments? Let us know and we'll go from there. Thanks.
Thanks for getting back to us! I think it'll be fine if you go with 29". I've never seen a manufacturer use 29-1/8" before. It's possible whoever made yours originally gave the channel a bit of extra length, but I can't be sure. Either way, a 29" option is the best alternative we can offer.
Oh great, thank you! We appreciate your business. Please let us know if you run into any problems. If that 1/8" ends up being an issue then we'll do our best to look into it.
Morning,
Drilling a new hole shouldn't the top sash to weaken.
Excellent. If you need anything else just let us know.