Simply the best and safest mount for your stamps. Lighthouse Mounts offer maximum protection against sticking, discolouration, dust and humidity. Stamps are held securely in place by strong clamp-type seal. Mounts are made from 100% polystyrene (free from softening agents, acids and stabilising chemicals). Anti-reflection coating prevents light interference. Special adhesive on reverse side of film (simply moisten and stick down!).

Please note: when you are buying mounts the 'size' represents the usable space, the actual mount is slightly bigger. 

D = Doragard (closed top and bottom, open at back)
d = double seal (closed top and bottom)

Please note the amount of block mounts is different for these sizes:
217 x 170 d = 5 pieces
217 x 148 d = 6 pieces
217 x 125 d = 7 pieces
217 x 100 d = 8 pieces
297 x 210 d = 5 pieces

All the other sizes are packed per 10 pieces.