How to Choose the Best Interior Door Combination Lock Buyer’s Guide (2018 Update)

Combination can be 4-8 digits with tumblers provided, over 8.000 options(it will open as long as the same numbers are used even in different order). Only for single bore door, and need to drilling work for 4 additional holes; not tall enough to cover the 2 bores on standard door; don t use this together with deadbolt, space is not enough; . Make sure your door open direction is same as this picture; will stay unlocked till pull up the handle to lock the door. Mechanical, no risk of “low battery”, suitable for wood or metal door thickness within 35-50mm, anti-friction spring latch. Maximum applicable bore size 2-1/8″; both 2-3/8″(60mm) & 2- 3/4″(70mm) backsets/latches, size 7.67″ x 2.44″ (195 x 62mm); .

Only for the single bore doors and for standard prepared single bore doors, need to drill additional 4 holes for the fasteners. Not tall enough to cover the 2 bores on standard door, don t use this together with deadbolt, space is not enough. Does not lock automatically (this is a pro or a con depending on your needs)- not deadbolt. Size 7.67 x 2.44, maximum borehole diameter 2-1/8″, only for the left handed door(suitable for wood or metal door thickness within 35-50mm). 100% mechanical stainless steel 304, excellent hard material, the thief very difficultly pries open them, perfectly safe. Design for do it yourself (diy), no risk of “low battery. Combination can be 4-8 digits(no repeat) and you can enter these numbers in any order to unlock it.

Perfectly safe, bump proof, pickproof, corrosion proof & weather proof. Suitable for areas which require restricted but convenient access: home, offices, workshops, storerooms, stockrooms, document stores, archive rooms. Mechanical.100% stainless steel 304, not deadbolt, make sure your door is open in the same direction as the picture(for right handle). Just fits for single bore door, and need to drilling work for 4 additional holes; not tall enough to cover the 2 bores on standard door; don t use this together with deadbolt, space is not enough. Suitable for wood, metal, plastic door thickness within 35-50mm; maximum applicable bore size 2 – 1/8″; both 2-3/8″(60mm) & 2 – 3/4″(70mm) backsets/latches, full size 7.67″ x 2.44″ (195 x 62mm).

Does not lock automatically (this is a pro or a con depending on your needs). Will stay unlocked till pull up the handle to lock the door. Combination can be 4-8 digits with tumblers provided, over 8.000 options.

Suitable for wood, metal, plastic door thickness within 35-50mm; maximum applicable bore size 2 – 1/8″; both 2-3/8″(60mm) & 2 – 3/4″(70mm) backsets/latches, full size 7.67″ x 2.44″ (195 x 62mm). Only fits for single bore door, and need to drilling work for 4 additional holes; not tall enough to cover the 2 bores on standard door; don t use this together with deadbolt, space is not enough; will stay unlocked till pull up the handle to lock the door. Does not lock automatically (this is a pro or a con depending on your needs). Combination can be 4-8 digits (can be in any order) with tumblers provided, over 8.000 options.

100% stainless steel 304, mechanical, no battery required, for right handed, not deadbolt. A bump proof, pickproof, corrosion proof & weather proof. Suitable for areas which require restricted but convenient access: offices, workshops, storerooms, stockrooms, document stores, archive rooms.