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Brand X
available from
home centers
Calvert Attic Stairs
Wooden_Folding_ladder_attic_stairs_thumb.jpg
Wooden Folding Attic ladder
Calvert Attic Stairs
Compact_Wooden_Folding_attic_Stairs_thumb.jpg
Compact wooden folding attic ladder
Calvert Attic Stairs
Aluminum_folding_attic_ladder_thumb.jpg
Aluminum folding attic ladder
Calvert Attic Stairs
Steel_telescopic_attic_stairs_thumb.jpg
Steel telescopic attic ladder
Calvert Attic Stairs
Aluminum_concertina_telescopic_attic_stairs_thumb.jpg
Aluminum telescopic attic ladder
Calvert Attic Stairs
Aluminum_telescopic_loft_ladder_thumb.jpg
Aluminum telescopic ladder for existing openings
Calvert Attic Stairs
Aluminum_folding_attic_ladder_thumb.jpg
Commercial aluminum folding ladder
Calvert Attic Stairs
Vertical_access_loft_ladder_thumb.jpg
Vertical opening access ladder

Ladder construction

#2 grade Pine 1x4
#1 grade Spruce 1x4
#1 grade Spruce 1x4
Aluminum channel, flat steps
Powder coated/galvanized steel sections
Cast aluminum alloy sections
Formed aluminum sections
Aluminum channel, flat steps
Powder coated/galvanized steel sections

Spring closing system

Unreliable, difficult to open
Dependable, balanced, easy to open
Dependable, balanced, easy to open
Dependable, balanced, easy to open
Dependable, balanced, easy to open
Dependable, balanced, easy to open
Not spring assisted
Dependable, balanced, easy to open
Dependable, balanced, easy to open

Frame construction

#2 grade Pine 1x4

1 x 5 Laminated plywood board

1 x 5 Laminated plywood board

1 x 5 Laminated plywood board

White steel frame with ceiling flange

1 x 9 Laminated plywood board

Frame not included

White steel frame with ceiling flange

White steel frame with ceiling flange

Cover door construction

3/8" unfinished plywood, no insulation, bolts visible from below

Insulated panel, foam insulation core, white exterior, no bolts visible

Insulated panel, foam insulation core, white exterior, no bolts visible

Insulated panel, foam insulation core, white exterior, no bolts visible

Smooth, sanded, unfinished 3/4" particle board, not insulated, bolts are visible.
Optional insulated panel, foam insulation, white sheet metal exterior

Insulated panel, foam insulation core, white exterior, no bolts visible

Cover door not included

White sheet metal exterior, foam insulation, bolts are visible.

Smooth, sanded, unfinished 3/4" particle board, not insulated, bolts are visible.

Cover door insulation value

Minimum value

R-7 (1.5" thick door)
R-5 (1" thick door)

R-5 (1" thick door)
R-7 (1.5" thick door)
R-7 ( optional insulated door)
Standard 3/4" particle board is not insulated
R-7 (1.5" thick door)
Cover door not included
Not insulated
R-5

Door latch and gaskets

No latch or gaskets, relies on springs to keep door closed

Latch keeps door tightly closed, neoprene gaskets form tight seal

Latch keeps door tightly closed, neoprene gaskets form tight seal

Latch keeps door tightly closed, neoprene gaskets form tight seal

Latch keeps door tightly closed, gaskets form tight seal on insulated models, no gaskets on non-isulated models

Latch keeps door tightly closed, neoprene gaskets form tight seal

Cover door not included

Latch keeps door tightly closed, hi-temp gaskets form tight seal

Latch keeps door tightly closed, no gaskets

 
Brand X

Toe space between door and ladder

No toe space, ladder is mounted against the cover door

2" toe space, ladder is mounted about 2" above the cover door

2" toe space, ladder is mounted about 2" above the cover door
2" toe space, ladder is mounted about 2" above the cover door
Maximum, ladder is moved away from the cover door
Maximum, ladder is moved away from the cover door
Maximum, ladder is moved away from the cover door
1" toe space, ladder is mounted about 1" above the cover door insulation
Maximum, ladder is moved away from the cover door

Ease of use

Difficult to open, springs are not balanced

Easy to open, spring are balanced, ladder sections are relatively light.

Easy to open, spring are balanced, ladder sections are relatively light.

One of the easiest to unfold, spring are balanced, ladder sections are very light.

One of the easiest to unfold, spring are balanced, ladder is very light.

Our largest and heaviest ladder, well balanced, spring assisted, but requires attention while opening, medium level of difficulty.

Our smallest stairs, easy to unfold, ladder is light, not spring assisted.

Easy to unfold, spring are balanced, ladder sections are very light, cover door is heavy, but spring assisted.

One of the easiest to unfold, spring are balanced, ladder is very light.

Duty / Capacity

Light duty / 250 lbs
Medium duty / 265 lbs
Medium duty / 265 lbs
Heavy duty / 300 lbs
Heavy duty / 350 lbs
Heavy duty / 350 lbs
Medium duty / 265 lbs
Heavy duty / 300 lbs
Heavy duty / 350 lbs

Opening sizes available

22.5" x 54"
25" x 54"
22.5" x 44",48",52"

24" x 44",48", 52"

28" x 44",48",52"
22.5" x 34"
24" x 34"
28" x 34"
24" x 44",48",52"

28" x 44",48",52"
Width 19.75" x 27",31",35",39"
Width 22.5" x 27",31",35",39",43"
Width 27.5" x 27",31",35",39",43"
28" x 40",44",48",52"
18" x 22.5"
or larger
28" x 44",48",52"
27.5" x 35",39", 43",47"

Min. to Max. ceiling height

7'-1" to 8'-6"
8'-6" to 10'-2"
7'-2" to 9'-1"
7'-2" to 10'-6"
7'-2" to 9'-5"
7'-2" to 9'-1"
7'-2" to 10'-6"
7'-11" to 10'-3"
6'-2" to 10'-6"
7'-2" to 9'-1"
7'-2" to 9'-1"
7'-2" to 10'-6"
Floor to floor
7'-2" to 10'-6"

Your cost* (aproximate)

$ 140.00 to $390.00

$274.00 to $396.00

$325.00 to $344.00
$495.00 to $572.00
$450.00 to $579.00
$698.00 to $823.00
$453.00 to $506.00
$764.00 to $1,219.00
$611.00

* Price on this table does not included S/H charge. Prices on our web pages will included S/H charge.

Calvert USA, Inc., All rights reserved, Calvert Attic Stairs, Calvert Stairs are trademarks of Calvert USA, Inc.