Weber Slate 36"

The trade, stated up front

This griddle has 756 square inches — within 13 of a Blackstone 36 — and 48,000 BTU against the Blackstone’s 60,000. That is 63.5 BTU per square inch versus 78.0: about 19% less heat over essentially identical surface.

In exchange you get a rust-resistant, pre-seasoned cooktop. Not rust-proof, but genuinely resistant in a way bare carbon steel is not, and usable from the first cook without a seasoning session.

That is the whole decision, and it is about you rather than the griddle.

Who the trade favors

Take it if you cook occasionally, store the griddle outdoors, live somewhere wet, or know yourself well enough to admit you will not do a sixty-second routine after every cook. A rust-resistant griddle at 63.5 BTU per square inch beats a high-density one you have to restore every spring.

Skip it if you cook weekly. A bare carbon-steel top used that often stays seasoned essentially by itself, because every cook with fat in it lays down another micro-layer. In that case you are paying for insurance against a risk you do not carry.

Four zones, and it reaches temperature

Four independently controlled burners over 756 square inches is the same staging capability as any 36-inch griddle: sear, two working temperatures and a holding zone at once. Weber states it reaches over 500 °F, which is adequate for everything short of an aggressive smash-burger crust.

Recovery under load is where the lower density shows. Put eight cold patties down at once and this griddle takes longer to come back than a Blackstone 36 or a Pit Boss Deluxe. If crust is your priority, that matters; if you are cooking breakfast for eight, it does not.

Practicalities

At 72 inches wide this is a large object, and some configurations ship with a digital thermometer, which is a genuinely useful addition on a plate this size.

The accessory ecosystem is smaller than Blackstone’s. That is not a cooking issue but it is a three-year issue: covers, spare tops and burner parts are easier to source for a Blackstone than for a Slate.

Rust-resistant is not rust-proof

Worth saying plainly, because the marketing invites the wrong conclusion. The coating resists corrosion; it does not make the griddle weatherproof. It still wants a cover and it still benefits from a wipe of oil after cooking. What it buys you is tolerance for the cook you forget, not permission to leave it uncovered all winter. Seasoning a Slate is a different job from seasoning a bare top.