I put wood stick at the bottom of the sliding door track to prevent the sliding door being opened. Even if the burglar can pry open the grill they have to break the sliding door glass to enter the house or climb the roof

if sliding fence can use this model. Cheap cheap but very efficient on pry effect. 1 sliding gate can use 2~3 pcs settled.

Isn't the joint easily knocked off or cut from outside assuming that you lock with padlock from inside?

it is so hard to knock off. You need grinder to cut both end and use hammer to knock it out. Normally thieve wont use loud sound tooling.

Thieve so love the bolt cutter. Easy bring and hide inside cloth.

SS can not be cut. Only can be saw.

What is this clamp actually called?

What statement is this??!! Please back this up with facts

Dogs can be poisoned right

there is not lucky. That need a lot knowledge when you order the gate / grille. Tons of people get cheat by those seller. Weak joint / weak lock eye / thin metal / cut cost material.

Like the twin door, my ss steel solid rod half inch thick almost 6 inch down to concrete. No matter how strong Bruce Lee kick also can not kick to open, even kick until leg broken also can not open. LOL

I used to stay in JB years ago. Two break-ins. One of them entered by cutting off the "ear" of the gate, rendering any good padlock useless.

Insurance doesn't help much if our wife or daughter kena raped by intruders.

Those with grille, can try this lock if the size is right. I'm using it for my condo's grille. Super tough.