Master Spas Challenger 21 Swim Spa Replacement Cover | Premium Swim Spa Covers Taper:6”-4” Custom fit for Dynasty Aquex

Custom fit for Dynasty Aquex 19 swim spa (224" x 92" replacement cover – available in three bi-folds or sectional configurations w/6" skirt length)

Custom fit for Master Spas Precision 8 Hot Tub (94" × 94" w/5" skirt)

Cover Thickness: 14 mil

Custom fit for Jacuzzi J-315 Hot Tub (76" × 66"with a 6" skirt)

and each bottle can be a first time or yearly treatment

Master Spas Challenger 21 Swim Spa Replacement Cover | Premium Swim Spa Covers Taper:6”-4” Custom fit for Dynasty AquexCustom fit for Master Spas Challenger 21 Swim Spa (252" x 94" replacement cover available in three bi folds or sectional configurations w 5" skirt length) High density foam insulation (1. 5 lb density) for superior heat retention and improved energy efficiency Available in marine grade vinyl or Atlantis Pro Tex performance fabric for long lasting durability and weather resistance Reinforced hinge seal for added strength and extended cover life Heat