i prefer glass just because this will be my only snake so i don't have to worry about others, cost effiency, or time cuz she'll have it all.

i need front opening doors cuz of my disability and exo-terra seems to be the only one i can find . plus i have a 12x12x12 for my crestie and like their cage setup.

looking at their size chart:
PT-2600 30 x 30 x 30 cm 12" x 12" x 12" (WxDxH)
PT-2602 30 x 30 x 45 cm 12" x 12" x 18" (WxDxH)
PT-2605 45 x 45 x 45 cm 18" x 18" x 18" (WxDxH)
PT-2607 45 x 45 x 60 cm 18" x 18" x 24" (WxDxH)
PT-2610 60 x 45 x 45 cm 24" x 18" x 18" (WxDxH)
PT-2612 60 x 45 x 60 cm 24" x 18" x 24" (WxDxH)
PT-2613 90 x 45 x 45 cm 36" x 18" x 18" (WxDxH)
PT-2614 90 x 45 x 60 cm 34" x 18" x 24" (WxDxH)

would the bold one be closes to a 20?