GSI 1/4" Window Kerf Bulb Weatherstrip Mount Slot Seal in 2 Colors and 6 Lengths (50, White)

Correct fit and fast shipping.

well i had some doors that were leaking a lot, and needed something. I did not want to spend $350 for the installation router tool. So i experimented with an oscillating multitool, and it worked great. I fits insterted a 1 inch wide blade into the multitool, positioned it into the door jamb and held it at a 45 degree angle so it would go into the jamb, and not the stop. Then cut a groove all around the door jamb. Then i inserted a "grout remover" blade into the multitool, and recut the groove to be just a little wider. That turned out to be the exact size the kerf needed to insert easily (with a screen roller tool i found at the hardware store), but would not pull out easily.

Bought this to replace the weatherstripping on my casement windows. Fit was good but noticed the old weatherstripping was foam filled and this is not. I’m assuming foam filled would be a better insulator but giving this price a try anyway.

This is my second purchase. This weatherstripping fits the 20+ year old vinyl double hung Reynolds windows on my house. The stripping between the meeting rails has been failing: the bead coming off of the strip that fits into the kerf. That was causing problems with insulation but especially annoying sound when the wind blew with the windows open and the stripping flapped. At any rate this is nearly a perfect match. Reynolds doesn't seem to have made it into the 21st century, so buying from the manufacturer didn't seem possible. Replacing the old weatherstripping was easy, just be sure to get the old stripping completely out. Then just cut to size and press into position. The windows seal like brand new now and no flapping sound in the wind.

Used to replace old Kolbe and Kolbe window weather seal on casement windows. Near perfect match to the original seal.

This was used on 100 yr old windows that had no weather stripping, and cut kerf and worked fantastically

Very nice product and worked better than I had hoped. I would suggest a different shipping method as they wrapped it tightly on an extension cord holder which flattened the mounding about every 10 inches. Had to work it quite a bit after warming it up to get it back into shape.

Ok quality