For CAD dwg and PDF files, scroll down to pattern links in 2 specification tables below.

Pattern       Number Dimensions in Inches Aluminum A x A1 B x B1 C LDT-1 24 x 24 30 x 30 42 7/16 LDT-4 30 x 30 36 x 36 50 15/16 LDT-7 36 x 36 42 x 42 59 3/8 LDT-9 42 x 42 48 x 48 67 7/8

Pattern       Number Dimensions in Inches Aluminum A x A1 B x B1 C LDT-2 24 x 30 30 x 36 46 7/8 LDT-3 24 x 36 30 x 42 51 5/8 LDT-5 30 x 36 36 x 42 55 5/16 LDT-6 30 x 48 36 x 54 64 7/8 LDT-8 36 x 48 42 x 54 68 7/16

More Information

• H-20 Heavy Duty Aluminum Hatches (PDF)
• Top Mount Style Aluminum Safety Grate System (PDF)
• Pneu-Spring Technology (PDF)
• Top Mount Replacement/Retrofit Hatches (PDF)

Complete list of hatches

• View Images of all Hatch Models »

• Pedestrian Rated 300 PSF, Channel Frame, Weather Tight Access Hatch
  • Model DT-AOSG, Safety Grate »
  • Model DTD-AOSG, Safety Grate (double leaf) »
  • Model CH »
  • Model CHD (double leaf) »
  • Model LDT »
  • Model LDTD (double leaf) »

• Pedestrian Rated 300 PSF, Angle Frame, Non Weather Tight Access Hatch
  • Model LEC-AOSG, Safety Grate »
  • Model LECD-AOSG, Safety Grate (double leaf) »
  • Model LEC »
  • Model LECD (double leaf) »

• Heavy Duty H-20, Channel Frame, Weather Tight Access Hatch
  • Model DT-HD-AOSG, Safety Grate »
  • Model DTD-HD-AOSG, Safety Grate (double leaf) »
  • Model DT-HD »
  • Model DTD-HD (double leaf) »

• Heavy Duty H-20, Angle Frame, Non Weather Tight Access Hatch
  • Model EC-HD-AOSG, Safety Grate »
  • Model ECD-HD-AOSG, Safety Grate (double leaf) »
  • Model EC-HD »
  • Model ECD-HD (double leaf) »

• Hatch Options »