Below is the list of tables from the database along with their columns and datatype. Need to generate an accurate SQL query for the question.
Only use the columns present in the respective table. Only use the columns which are required to generate the SQL query. Only use table joins if required and not otherwise.

### Tables ###
TABLE: CREATE TABLE store_district ( store_id number, district_id number )
TABLE: CREATE TABLE store ( store_id number, store_name text, type text, area_size number, number_of_product_category number, ranking number )
TABLE: CREATE TABLE store_product ( store_id number, product_id number )
TABLE: CREATE TABLE product ( product_id number, product text, dimensions text, dpi number, pages_per_minute_color number, max_page_size text, interface text )
TABLE: CREATE TABLE district ( district_id number, district_name text, headquartered_city text, city_population number, city_area number )

### Question ###
What is the maximum page size for everything that has more than 3 products listed?

### Accurate SQL ###

SELECT max_page_size FROM product GROUP BY max_page_size HAVING COUNT(*) > 3