1 - Garage Door Torsion Spring .207 X 2" X 23 - OT PAIR - LHW + RHW:RIGHT-HAND WIND (RHW) Siren Test: The SOS includes

Siren Test: The SOS includes a CD recording of an emergency responder "yelp" siren so you can test the unit and adjust the sensitivity settings to your preference

For use with various LiftMaster Swing Gate Operators LA400

IMPORTANT: The inner slide must be on the left side of the chain

The model 841LM 12V lock is only compatible with the following garage door opener model numbers: 8550WL

1 - Garage Door Torsion Spring .207 X 2" X 23 - OT PAIR - LHW + RHW:RIGHT-HAND WIND (RHW) Siren Test: The SOS includesDescription These are the highest quality Garage Door Oil Tempered Torsion Springs on the market. All springs come complete with both a winding cone and a stationary cone which makes for an easy installation. Features Black coated corrosion resistant torsion springs Installation If only one spring has broken, you can expect that the other one will break very soon. That is why we always recommend replacing them in pairs. We offer professional