Window installation
clamp guide

Know the tool

Three contact points to understand

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1 · Suction cup

The black cup needs a complete seal on clean, smooth, non-porous material. Seat the cup itself before loading the bridge.

2 · Threaded adjustment

The wing nut and threaded stud adjust the bridge's holding pressure after the cup is secure. Tightening the screw does not create the suction seal.

3 · Padded bridge feet

The two padded feet bear on suitable protected contact areas. Keep both pads seated and away from exposed glass edges or unstable trim.

Step by step

Seat first. Adjust second.

1. Dry-fit and choose locations

   Support the glass and test its placement before adhesive application. Choose smooth contact areas where the cup can seal and both padded feet can sit securely. Avoid steep curves, dirty surfaces and exposed glass edges.

2. Clean the cup and contact areas

   Remove dust and grit from the suction cup and both foam pads. Clean the contact surfaces using a method compatible with the glass, paint and adhesive system. Leave the suction contact area clean and dry.

3. Seat the suction cup first

   Back off the threaded adjustment enough to avoid loading the bridge. Press the cup itself against the selected surface to expel trapped air and establish its seal. If your cup has a separate locking handle, engage it as designed.

   Do not try to attach the tool by pressing down on the entire assembled bridge. If the cup will not seal, select another suitable location.

4. Bring the padded feet into contact

   With the cup secure, position the padded feet at the planned contact points. Adjust the wing nut gradually until the bridge provides light holding pressure. Keep the window supported as needed and check that neither foot slips.

5. Check placement during curing

   Check the reveal, neighboring body lines and glass depth from several angles. Maintain the specified adhesive gap and spacer arrangement. Check the cup seal and contact points while the installation remains supported through the required cure period.

6. Unload and release carefully

   After the required cure period and checks in the window and adhesive instructions, loosen the adjustment to remove bridge pressure. Support the tool, release the suction using its release feature and remove it gently. Do not pry against the glass or pull the window outward.

A closer look

What to check on the glass

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Working with curved surfaces

Extra control for dual-curve glass

Dual-curve windows can require extra care where the glass contour meets the vehicle body. That placement challenge can occur across brands and vehicle platforms. Clamps can help manage small positioning adjustments and maintain the intended placement during curing, without forcing the glass into an unnatural shape.

A must-have addition to a professional installer's toolkit and a useful backup for DIY builders: have the clamps ready before adhesive application so you can address a placement challenge promptly.