![Krystal Pollitt on Twitter: "I've seen a lot of classrooms recently with similar ACH rates (<1/h). We've been thinking through approaches that can be used in different types of classroom spaces to Krystal Pollitt on Twitter: "I've seen a lot of classrooms recently with similar ACH rates (<1/h). We've been thinking through approaches that can be used in different types of classroom spaces to](https://pbs.twimg.com/media/EfU2U7mXsAA-iEp.jpg:large)
Krystal Pollitt on Twitter: "I've seen a lot of classrooms recently with similar ACH rates (<1/h). We've been thinking through approaches that can be used in different types of classroom spaces to
Prices at Total Ventilation Hygiene Services – Building and construction – New South Wales – Nicelocal.com.au
![Total Ventilation Hygiene in Prestons, Sydney, NSW, Air Conditioning & Heating Installation - TrueLocal Total Ventilation Hygiene in Prestons, Sydney, NSW, Air Conditioning & Heating Installation - TrueLocal](https://media.truelocal.com.au/C/D/C8897D90-B9AD-44F9-86A0-DAB552C07C4D/total-ventilation-hygiene-prestons-air-conditioning-heating-installation-tvh-hvac-hygiene-services-d269-938x704.jpg)