The wihaan, i.e. the sermon or prayer hall, of Wat Ketu Madi Sri Warahrahm in Samut Sakon (fig.) is said to be the tallest in Thailand, and its immense dimensions are best appreciated from the inside, where life-sized statues of monks and Buddha images stand lined up in rows holding alms bowls, which allows visitors to view the building's height in some perspective. In the back are three Buddha images seated in the maravijaya pose.

The principal image, which here is also the largest one, is seated on a lotus pedestal and in front of a structure called reuan kaew, i.e. ‘crystal palace’, and is an imitation of the Phraphutta Chinnarat image from Wat Phra Sri Rattanamahathat in Phitsanulok (fig.).

The rows of life-sized statues of monks and Buddha images with alms bowls are 108 in total, symbolizing the 108 auspicious signs of a buddha, and are used for tamboon sai baat, i.e. the offering of small coins in alms bowls lined up in long rows, in order to make merit (fig.).