are all these dishes made out of borosilicate glass? in some descriptions it is not mentioned. if yes, is it mentioned on each packaging too? thanks

DEFINITELY NOT 100% BOROSILICATE! 1) They don't say 100% borosilicate. Instead they say "borosilicate technology." 2) The website description says BORON AND TEMPERING (boron is borosilicate, tempering is soda lime). 3) They sell for around $16 (way lower than what true borosilicate should cost). This, along with the fact that the glass is so thick leads me to beleive they are a mix of borosilcate and soda lime. True borosilicate products use thin glass to minimize the expansion between the inner and outer layers, while soda lime glass is made thicker to be stronger and less likely to break. The great thing about borosilicate is it cracks when it expands too much, but soda lime explodes like a grenade. The mix of products should also explode, which is what I was trying to avoid by buying what I thought was 100% borosilicate.

A comment on another site indicates the 13" by 9.75" actually measures 12" by 8." Can you verify and also measure the depth? Thanks so much.

The interior depth is 2".The interior length x width is 12.25" x 8.25". Since the long sides are slightly curved, I measured the width at the center of the pan. The width closer to the end is only about 7.75".

33 X 20 Cm Rectangular Borosilicate Glass Roaster

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Description

🍳 Cook Bold, Clean Easy, Live Elevated!

CONFIDENCE BUILT IN - Backed by a 5-year manufacturer guarantee—cook worry-free and elevate your kitchen game.
EFFORTLESS VERSATILITY - Oven, microwave, freezer, and dishwasher safe—cook, chill, and clean with zero hassle.
PURE HYGIENIC COOKING - Borosilicate glass resists stains and flavor retention, ensuring every meal tastes fresh.
UNMATCHED THERMAL RESILIENCE - Withstands extreme temps from -40°C to +300°C without cracking or warping.
GENEROUS SIZE FOR EVERY OCCASION - 33 x 20 cm rectangular design perfect for family dinners or meal prepping like a pro.

This 33 x 20 cm rectangular roaster is crafted from durable borosilicate glass, offering exceptional thermal shock resistance from -40°C to +300°C. Designed for modern kitchens, it’s oven, microwave, freezer, and dishwasher safe, while resisting stains and flavor retention for pure, hygienic cooking. Backed by a 5-year guarantee, it’s the reliable, versatile roaster that keeps up with your culinary ambitions.

Reviews

L**2

very happy

using this for my hamsters sand bath so good size,also ordered one and received two so very happy

6.03.2026

J**.

Seems good.

Bought to replace one we smashed at a holiday home. Did the job but I can't comment on its effectiveness as we didn't use it after we bought it.

14.12.2017

R**T

Great value

20.12.2020

J**C

Three Stars

Different brand and product specs than the product listing. Here's a photo of the real dimensions.

9.02.2017

D**E

Great

Really useful size as I can get two side by side in the oven.

20.02.2015

A**R

Five Stars

great

21.10.2016

A**A

Five Stars

Prompt deliver and fits the bill exactly

21.02.2017

D**L

Three Stars

It's Ok but needed one a bit deeper.

17.01.2016

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