【Wide Range of Applications】Shower door bottom guide fit for framed glass sliding shower doors. The package include 2 glass shower door bottom guides. 【High Quality】The sliding shower door track guide is a white plastic construction, which is made of high-quality materials, which is not easy to damage and has a long service life. 【Easy Installation】The sliding shower door bottom sill guide is easy to install. Start by raising one corner of the glass door panel and then use a flathead screwdriver to install the rails in the correct position. (Note: The package does not include a flathead screwdriver.) 【Function】The shower door parts bottom guide help keep sliding door panels centered to their respective tracks. The shower door guide can hold the door from swinging outward. Get your shower door to slide smoothly again. 【After-Sale Service】We are committed to providing you with better service! If you have any questions about the size, material, installation and other aspects of the shower door guides, you can send us an email at any time, we will reply within 24 hours. Shuisen Shower Door Bottom Guide Fit for Sliding Shower Doors Sliding Shower Door Bottom Sill Guide Package Include 2 × shower door track guide Product Size Framed shower door guide's length: 3-1/8" Glass shower door bottom sill guide's wide: 9/16" Step by step instructions how to replace sliding shower door bottom sill guides Step 1: Elevate the corner of the glass panel so that the bridge portion of the nylon guide is diagonal. Step 2: Place the narrow side of a flat head screwdriver into the guide's groove so that at least half of the screwdriver's flat side is flush against the guide. Step 3: While keeping the screwdriver locked in this position and with panel still elevated, rotate the screwdriver approximately 1/4 of a turn so that the bottom of the guide rotates toward you. Step 4: Pull the screwdriver handle away from the panel to disengage the guide from the track allowing you to further adjust the roller brackets. ( Note: The package does not include a flat head screwdriver. )