pressure for maximum effectiveness. It is suggested the fenders to be washed regularly with clean and protected from sun and salt.ModelSize(L*D*A)ThicknessWeightBuoyancyPacking(pcs/box)AbbreviationF401540*15*2.0cm3.8mm700g5kg20/40*40*32cm/F421142*11*1.2cm3.8mm360g5kg20/42*40*29cm/F511451*14*1.4cm3.8mm800g10kg10/46*50*21cm/F621662*16*2.2cm3.8mm1100g15kg10/60*43*20cmF1F622262*22*1.8cm3.8mm1600g20kg10/70*51*29cmF2F722072*20*2.6cm3.8mm1750g35kg10/70*51*29cmF3F762876*28*2.0cm3.8mm2700g50kg8/70*51*29c