Trying to determine correct weight

Question

I don't have the window with me, but I'm trying to figure out when ordering if I have the correct part to handle the weight of my window. Any help you can offer is appreciated. Thanks

Emily · Accepted Answer

Thank you for reaching out to us. Your stamp is from an old rating system that we don't use, so you'll have to weigh the window sash to determine the correct stamp option. Feel free to get back to us with that along with photos of the top and bottom of this balance. We would also like to see an image of the inside of the balance’s metal channel, where the innerspring connects to the pulley mechanism; this connection is located in the middle of the channel.