What is the difference between a single cylinder&a double cylinder deadbolt lock?

Answer Deadbolt locks offer a strong measure of security for exterior doors. Deadbolts are often used on both front and back exterior doors. Double cylinder deadbolts are designed for a specific purpose.F... Read More »

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Can I replace a grade 3 deadbolt lock with a grade 1 deadbolt without making changes to the door?

The grade wouldn't make any difference. It depends on what brand door lock the hole in the door was originally cut for. Most are 21/8" hole side with a 1" hole cut for the backset. There are a few... Read More »

What is a deadbolt lock?

Door locks are simple, cheap and effective security methods. Deadbolts are a type of lock that offer increased security over standard locks and latches. Deadbolts may not thwart all criminals, but ... Read More »

What is a good brand of deadbolt lock?

Suggest investigating the dead bolts manufactured by Medeco.…

What is the difference between a single gas cooker and a double gas?

A single cooker will be 60 cm wide, have one oven and four burners on the hob. A double cooker will be 100cm or 110cm wide, have 2 ovens and 5 or 6 burners on the hob.