Designed to fit: Riccar 1500 canister series Simplicity Type H Models: S13L, S14CL, S18, S24, S30, S36, S38 Type H Bags Allergy Vacuum Bags Item is: Micro filtration Allergy Bag, a must for Allergy sufferers! 99.7 % Filtration, Traps Microscopic particles and Allergens. Captures Microscopic Particles, Germs, and Bacteria as small as 0.1 micron