Astragal Seal A heavy duty storm proof Astragal, RP36 consists of a combination of RP4T and an ‘L’ shaped extrusion to produce a tamper proof door seal. Used predominantly on industrial type doors where weather sealing and tamper proof qualities are required, its multi blade seal defies rain infiltration. The leg of the seal can be checked out to accommodate the latch bolt front plate. Location Double butt hinged doors, sliding doors. Min/Max Gap 11mm/13mm. Seal Sizes Available in stock lengths. Maximum length 3000mm. Standard Finish Anodised Satin Clear or Bronze. PE Paint (extra cost). Is a two pack polyester enamel colour match finish which is equal to or exceeds powdercoat finish. Fixing Method Zinc plated, cross recess head S.T. screws of the appropriate size and colour are supplied. Seal Material PVC (grey). Replacement Seal RP404. Replacement Gaskets RP423.