![Liftmaster K77-37855 Operator Cover with labels for RSL12U [K77-37857]](https://cdn11.bigcommerce.com/s-32eq2wsbti/images/stencil/1280x1280/products/12757/230250/liftmaster-k77-37855-operator-cover-with-labels-for-rsl12u-k77-37857-k77-37855__34128.1721412032.jpg?c=2 "Liftmaster K77-37855 Operator Cover with labels for RSL12U [K77-37857]")
![Liftmaster K77-37855 Operator Cover with labels for RSL12U [K77-37857]](https://cdn11.bigcommerce.com/s-32eq2wsbti/images/stencil/500x659/products/12757/230250/liftmaster-k77-37855-operator-cover-with-labels-for-rsl12u-k77-37857-k77-37855__34128.1721412032.jpg?c=2 "Liftmaster K77-37855 Operator Cover with labels for RSL12U [K77-37857]")
LiftMaster K77-37855 — Operator Cover with labels for RSL12U [K77-37857]. Genuine LiftMaster replacement part, fits RSL12U, RSL12UL, RSL12VDC, RSL12V.
| Part number | K77-37855 |
|---|---|
| Description | Operator Cover with labels for RSL12U [K77-37857] |
| Brand | LiftMaster |
| Fits | RSL12U, RSL12UL, RSL12VDC, RSL12V |
Not sure this is the right part? Send us the model number from your operator’s data plate and a photo of the part you are replacing — parts@gatehousesupplies.com or 866-965-5599. We install and service this equipment and would rather confirm it than have you order twice.
![Liftmaster K77-36480 Operator cover w/labels, keys & lock assembly [K77-37183]](https://cdn11.bigcommerce.com/s-32eq2wsbti/images/stencil/500x659/products/13375/229948/liftmaster-k77-36480-operator-cover-wlabels-keys-and-lock-assembly-k77-37183-k77-36480__48676.1721411546.jpg?c=2 "Liftmaster K77-36480 Operator cover w/labels, keys & lock assembly [K77-37183]")
