Yes, the largest size will fit your 42" x 28" crate. The K&H Self Warming Crate Pads have a special design with slits in each corner that allow the pad to fit in smaller crates. The slits in the large allow adjustment of about 3" per side, meaning it will fit in crates as small as 42" x 26".
answered 4 months ago
K&H Customer Service
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