Ventistamp Maxvents Slotted Core Vents


Maxvents are manufactured with either a 0.012" (0.3 mm)or a 0.018" (0.45 mm) slot that is tapered 30 degrees on the back side to prevent sand clogging. These vents are made from a brass alloy (SAE 430-B) for high wear resistance and are designed to be used with sand that has an AFS fineness of 60 to 80.

Sold in bags of 100 vents.

Also available in curved and inclined head design. Please call for size and availability.

Sand Modulus Core Vent Slot Width Core Vent Mesh Size
Up to 55 AFS
0.45mm (0.014")
40 Mesh
55-75 AFS
0.30mm (0.012")
50 Mesh
75-80 AFS
0.25mm (0.010")
60 Mesh
Above 80 AFS
0.20mm (0.008")
70 Mesh




SKU Description   UM Thick Width Length Height Board ft. Net Wt. Diameter Grade Grit Plys Radius SPB Ship Note Min. Qty Pcs/Box Pcs/Bundle Winding Ft/Box Handle Len Head Diam Head Len Mfg. # Qty
034511 Maxvent RP Vent - 3/16" Diameter, .30mm (.012") Slot Width SO BG 8MM 3/16" RP30H8-3/16LM
034512 Maxvent RP Vent - 1/4" Diameter, .30mm (.012") Slot Width SO BG 8MM 1/4" RP30H8-1/4LM
034513 Maxvent RP Vent - 5/16" Diameter, .30mm (.012") Slot Width SO BG 8MM 5/16" RP30H8-5/16LM
034514 Maxvent RP Vent - 3/8" Diameter, .30mm (.012") Slot Width BG 8MM 3/8" RP30H8-3/8LM
034516 Maxvent RP Vent - 1/2" Diameter, .30mm (.012") Slot Width SO BG 8MM 1/2" RP30H8-1/2LM
034518 Maxvent RP Vent - 5/8" Diameter, .30mm (.012") Slot Width SO BG 8MM 5/8" RP30H8-5/8LM
034519 Maxvent RP Vent - 3/4" Diameter, .30mm (.012") Slot Width SO BG 8MM 3/4" RP30H8-3/4LM
034521 Maxvent RP Vent - 1" Diameter, .30mm (.012") Slot Width SO BG 8MM 1" RP30H8-1
034526 Maxvent RM Vent - 6mm Diameter, .30mm (.012") Slot Width SO BG 8MM 6MM RM30H8-06
034528 Maxvent RM Vent - 8mm Diameter, .30mm (.012") Slot Width SO BG 8MM 8MM RM30H8-08
034619 Maxvent RM Vent - 8mm Diameter, .30mm (.012") Slot Width SO BG 10MM 8MM RM30H10-08
034722 Maxvent RM Vent - 8mm Diameter, .45mm (.014") Slot Width SO BG 10MM 8MM RM45H10-08
034530 Maxvent RM Vent - 10mm Diameter, .30mm (.012") Slot Width SO BG 8MM 10MM RM30H8-10
034620 Maxvent RM Vent - 10mm Diameter, .30mm (.012") Slot Width SO BG 10MM 10MM RM30H10-10
034567 Maxvent RM Vent - 10mm Diameter, .45mm (.014") Slot Width SO BG 10MM 10MM RM45H10-10
034531 Maxvent RM Vent - 12mm Diameter, .30mm (.012") Slot Width SO BG 8MM 12MM RM30H8-12
034621 Maxvent RM Vent - 12mm Diameter, .30mm (.012") Slot Width SO BG 10MM 12MM RM30H10-12
034568 Maxvent RM Vent - 12mm Diameter, .45mm (.014") Slot Width SO BG 10MM 12MM RM45H10-12
034533 Maxvent RM Vent - 14mm Diameter, .30mm (.012") Slot Width SO BG 8MM 14MM RM30H8-14
034535 Maxvent RM Vent - 16mm Diameter, .30mm (.012") Slot Width SO BG 8MM 16MM RM30H8-16
034723 Maxvent RM Vent - 16mm Diameter, .30mm (.012") Slot Width SO BG 10MM 16MM RM30H10-16
034623 Maxvent RM Vent - 16mm Diameter, .30mm (.012") Slot Width SO BG 10MM 16MM RM30H10-16
034537 Maxvent RM Vent - 20mm Diameter, .30mm (.012") Slot Width SO BG 8MM 20MM RM30H8-20
034624 Maxvent RM Vent - 20mm Diameter, .30mm (.012") Slot Width SO BG 10MM 20MM RM30H10-20
034569 Maxvent RM Vent - 20mm Diameter, .45mm (.014") Slot Width SO BG 10MM 20MM RM45H10-20
034539 Maxvent RM Vent - 25mm Diameter, .30mm (.012") Slot Width BG 8MM 25MM RM30H8-25
034626 Maxvent RM Vent - 25mm Diameter, .30mm (.012") Slot Width SO BG 10MM 25MM RM30H10-25
034627 Maxvent RM Vent - 30mm Diameter, .30mm (.012") Slot Width SO BG 10MM 30MM RM30H10-30

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Important Information

  • Shipping: Freeman charges standard published UPS/FedEx shipping rates (unless freight is specified). All orders under $25 are subject to a $5 small order fee. International orders are subject to a $250 minimum order.

  • Liquid products are sold by weight, not volume.

  • SPB = Sheets per Box

  • HAZ-G = Hazardous material, cannot ship air, up to $33 surcharge applied for each package shipped ground within the US.

  • HAZ-A = Hazardous material, cannot ship air, no surcharge for ground shipping.

  • HAZ-T = Toxic material, must be sent by freight carrier.

  • FRT = must be sent by freight carrier due to size, weight, or hazardous classification.


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