skip to footer block
REI Mul T Lock 240S KEYBLK YALE Interactive S Master Key P12365843REI-MTL240S https://cdnimages.opentip.com/full/REI/REI-MTL240S.jpg Mul T Lock 240S KEYBLK YALE Interactive S Master Key Manufacturer Part Number: 240S-Keyblk-YaleMul-T-LockInteractive "S" Master Key Blank 12365843 0.1000lbs 0.00 0.00 0.00
Mul-T-Lock
67.2 2025-11-18 120 In Stock
customer review - by , January 1, 2023
5/ 5stars
Arrived quickly and exactly as described. Easy to install/replace on our existing doors...like 10 minutes tops.A great lock to replace the crappy ones that most people have and provide an excellent part of front-line security to your doors.Everything you do to make you home harder to get into provides another layer of security, and this is a really good layer to have!
customer review - by , June 6, 2022
5/ 5stars
Used to harden up my two exterior doors, along with replacing the door hinge fasteners with 3 inch ones, and also added the Defender Security U 10385 door strikes.
customer review - by , March 3, 2022
5/ 5stars
I love these locks. They're very sturdy and worth the added cost.Also, the customer service from Gabriel Lock and Key is amazing!! I'm not very handy, but they've been so helpful.
customer review - by , March 3, 2022
5/ 5stars
Heavy duty!
customer review - by , March 3, 2022
5/ 5stars
Great deadbolt and easy to install.
customer review - by , March 3, 2022
5/ 5stars
This is what you expect when getting a good deadbolt.
customer review - by , December 12, 2021
4/ 5stars
This surprised me because upon opening there is no Mul-T-Lock markings anywhere on the lock like the pictured shows? Where the key goes in there is a super small engraving of a key core I think? The box is white with nothing on it. Just the two keys have the name on the plastic and the credit card. The other thing is was surprised the shroud inside was all plastic? Thought that was supposed to be steal or brass. Hope this is not a knock off of the lock. Other than that is looks well made. Talked to the seller and this is the Interactive model. Very precision feel to it using the key and the key is very unique. Never seen moving parts in a key before.
customer review - by , November 11, 2021
5/ 5stars
This lock is excellent. I love it. I just wish the additional keys that I needed were cheaper
customer review - by , May 5, 2021
5/ 5stars
Watch a couple bump key videos and you will see shy you need these quality of cylinder.
customer review - by , April 4, 2021
5/ 5stars
Decided to upgrade my el-cheapo kwiksets with these at a new place. Also put in some door armor strike plates after some mortising, the works etc. These dropped right in just fine. Make sure to be patient in assembling them to ensure the core is lined up with how the key vs latch works. Do not overthink this. Just play with it fully assembled for like 5 min BEFORE you install. Okay, anyways... the locksmith kept asking me prying questions in face of this level of security: what do you do for a living, how many bodies are you hiding? Are the ABC boys coming? You aren't gonna ask us for a lockout service later are you? We're coming through the window bud, Etc. I told him if it takes LockPickingLawyer >2 min then it's a good lock. He got the reference. Then said in all his career, he's never seen anyone buy such a thing for a house - it's just that much overkill per him. I guess i live in a very nice area. Needless to say, no one is (realistically) going to attempt to bump this. Unless they're ABC boys. In which case - wait nvm, opsec. Anyways, the tl;dr is, if you have this, or even the Junior MulTLock, basically you are good to go. Also, when you step back and look at the keyhole - yeah it's pretty intimidating. Make sure to spray some silicon or ASSA lube in the keyway annually if you live in extreme temps. Do NOT use WD40!
  »  
  »  
  »  
  »  

Mul-T-Lock 240S-KEYBLK-YALE Interactive S Master Key

stars Rating 5 | 15 reviews
Brand Mul-T-Lock
Shop more from REI
SKU: REI-MTL240S
Unit Price: $6.72
Buy in bulk & save 20% ($5.38 each)
Min.Order Price: $67.20 for 10 units
Quantity:
120 In Stock
*  Shipping Note: Usually ships within 5 to 6 days.
* This item must be ordered in multiples of 10.
*  Click "Add to Cart" to calculate shipping and delivery time.
Share & Earn 10% Cash Back Best Price in Bulk
*  Price: $6.72 ea X 10 qty = $67.20
Quantity Price Save
10+ $6.72 0%
50+ $5.38 20%
* This item is excluded from use of other offer, discount or coupon.

Product Description

Manufacturer Part Number: 240S-Keyblk-Yale

Mul-T-Lock
Interactive "S" Master Key Blank

warning tips WARNING: This product can expose you to chemicals which are known to the State of California to cause cancer, birth defects, or other reproductive harm. For more information, go to www.p65warnings.ca.gov.

Return Policy

All REI- items are non-returnable.
Need more information?
Our staff are available to answer any questions you may have about this item
Request More Information

Look Similar Items By Category

Industrial & Scientific > Fasteners > Screws
Tools & Home Improvement > Hardware > Nails, Screws & Fasteners > Screws
Customer Reviews
5 out of 5
see all 15 reviews
5 stars
13
4 stars
2
3 stars
0
2 stars
0
1 stars
0
Write a Review
By The Frog
Date: January 19, 2023
Arrived quickly and exactly as described. Easy to install/replace on our existing doors...like 10 minutes tops.A great lock to replace the crappy ones that most people have and provide an excellent part of front-line security to your doors.Everything you do to make you home harder to get into provides another layer of security, and this is a really good layer to have!
Rating: 5 stars [5 of 5 Stars!]
By lway45
Date: June 20, 2022
Used to harden up my two exterior doors, along with replacing the door hinge fasteners with 3 inch ones, and also added the Defender Security U 10385 door strikes.
Rating: 5 stars [5 of 5 Stars!]
By mintindeed
Date: March 25, 2022
I love these locks. They're very sturdy and worth the added cost.Also, the customer service from Gabriel Lock and Key is amazing!! I'm not very handy, but they've been so helpful.
Rating: 5 stars [5 of 5 Stars!]
By A Customer
Date: March 13, 2022
Heavy duty!
Rating: 5 stars [5 of 5 Stars!]
By Sha Digg
Date: March 06, 2022
Great deadbolt and easy to install.
Rating: 5 stars [5 of 5 Stars!]
By Customer
Date: March 05, 2022
This is what you expect when getting a good deadbolt.
Rating: 5 stars [5 of 5 Stars!]
Items 1 - 6 of 15 reviews
 1  2  3  [Next]