ESP ES300 to ES399 Key | USA & Canada

ESP Lock and Key Series ES300 to ES399

ESP ES300 to ES399 Key | USA & Canada

  • Scroll down and read ALL Technical Notes BEFORE placing order.

Regular price $4.35
  • This price is for orders placed online only. Pricing for telephone or walk in orders at our retail store are significantly higher. Please place your order online to save money.
  • Free Canada and USA shipping on orders over $100 Est.1965. Fast shipping: USA, Canada & Worldwide.

ESP ES300 to ES399 series easy replacement keys for ESP Locks used on Office Furniture, File Cabinets, Desks, Drawers, Cubicles.

We also ship ESP Lock cores, housings & parts.

When you have lost or are missing the key we make easy replacement key copies by the code number stamped on the original key or on the face of the lock.

We stamp our replacement keys with that code number for easy identification.

We make keys for all major manufacturers.

We have a vast inventory of hard to find key cylinders, cores, lock housings, complete locks & parts for all major office furniture desk file cabinet and cubicle manufacturers including obsolete and legacy parts.

***Please choose your key number from the drop down list above***




Technical Info:

Pictures and info courtesy of Roy Long

Click on the business card below for vast office furniture service info.



For quick how to videos visit Roy’s YouTube channel Mr. File Cab

ESP locks ,cores and keys , (


There are no refunds or returns on office furniture keys, this keeps our prices low

If your key goes into the lock but did not work please check the following:

Did you order the correct key, the numbers stamped on the lock can be hard to read, use a magnifying glass or take a picture with your cell phone and zoom in.

Sometimes the number on the lock is wrong or the lock has been rekeyed, you will require onsite service to repair or a new lock is required

If the key goes in and turns but the furniture does not lock then there is a problem with the locking mechanism

If the key won't go in check and see if there is a broken key inside the lock, if so it will have to be removed or you will need a new lock

Keys in this series:

ES300 ES301 ES302 ES303 ES304 ES305 ES306 ES307 ES308 ES309 ES310 ES311 ES312 ES313 ES314 ES315 ES316 ES317 ES318 ES319 ES320 ES321 ES322 ES323 ES324 ES325 ES326 ES327 ES328 ES329 ES330 ES331 ES332 ES333 ES334 ES335 ES336 ES337 ES338 ES339 ES340 ES341 ES342 ES343 ES344 ES345 ES346 ES347 ES348 ES349 ES350 ES351 ES352 ES353 ES354 ES355 ES356 ES357 ES358 ES359 ES360 ES361 ES362 ES363 ES364 ES365 ES366 ES367 ES368 ES369 ES370 ES371 ES372 ES373 ES374 ES375 ES376 ES377 ES378 ES379 ES380 ES381 ES382 ES383 ES384 ES385 ES386 ES387 ES388 ES389 ES390 ES391 ES392 ES393 ES394 ES395 ES396 ES397 ES398 ES399


-10 small office furniture keys or 5 full size keys can ship by Canada Post regular non tracked mail for $4.95
-Other orders ship by Canada Post shipping of your choice at checkout at actual Canada Post cost

Other orders ship by Canada Post shipping of your choice at checkout at actual Canada Post cost