  For ultra-wide systems (with outer orbit >$10^{3}{\rm AU})$ the galactic
field is collisional. Hence, ultra-wide triple white-dwarfs (TWDs) can be
perturbed, by flyby stars, to sufficiently high outer eccentricity such that
the triple becomes dynamically unstable. An unstable triple undergoes multiple
binary-single resonant encounters between all three WDs. These encounters might
result in a direct collision between any random two WDs and lead to a Type Ia
supernova (SN) event. In case where the multiple resonant encounters did not
produce a collision a compact binary is formed (while the third WD is ejected),
this binary either collides or merges via gravitational wave emission, similar
to the classic double-degenerate (DD) channel. In this research study we
estimate the galactic rates of Type Ia SN from the direct collision channel is
to be $0.1\%-4\%$ and primarily $2\%-36\%$ from the DD scenario.
