Tailored for 400 x 400 MPK skylight models (900041, 900043, 900081, 900083), this original kit is quick and simple to install, restoring the full locking function of your vent window. Genuine MPK lock set—secure your 400 x 400 rooflight, fits models 900041, 900043, 900081, 900083; easy installation for added safety.
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